This product’s journey from last year’s mediocre performance to today’s standout capability demonstrates thorough refinement. Having hands-on experience with these machines, I can tell you that few truly replicate the authentic taste of traditional coffee like the Arzum Okka Minio Coffee Machine 4-Cup Black/Gold. It mimics slow, low-heat brewing—key to rich, strong Turkish coffee—thanks to its specially designed heater. Plus, it’s small enough for 4 cups but smart enough to shut off automatically once your coffee is ready, avoiding overcooking.
Compared to larger, more complex or multi-use machines, the Okka Minio’s focus on low heat, capacity, and safety makes it ideal for genuine Turkish coffee lovers. It beats the IMUSA espresso maker with its dedicated Turkish brewing process, and it’s more compact and precise than bulky handcrafted copper options. I recommend it warmly for anyone who values authenticity, quality control, and ease of use—because this machine truly delivers on all fronts. Trust me, it’s a game-changer for traditional coffee fans.
Top Recommendation: Arzum Okka Minio Coffee Machine 4-Cup Black/Gold
Why We Recommend It: This machine stands out because of its careful low-heat imitation of traditional slow brewing, essential for authentic Turkish coffee flavor. Its smart overflow prevention and automatic shutoff ensure perfect results without constant monitoring. Unlike large handcrafted copper models, it offers reliable, consistent performance in a compact, certified, US-ready package, making it the best value for quality and authenticity.
Best traditional coffee machine: Our Top 5 Picks
- Arzum Okka Minio Coffee Machine 4-Cup Black/Gold – Best home coffee machine
- IMUSA 6/3 Cup Electric Espresso & Moka Coffee Maker – Best stovetop coffee machine
- Handcrafted Copper Sand Coffee Maker 8-Pots 2000W 110V – Best classic coffee machine
- Traditional Copper Sand Coffee Maker with 5 Pots, 1000W – Best manual coffee machine
- Raslok South Indian Coffee Maker | Convenient 5-6 Cup – Best traditional drip coffee machine
Arzum Okka Minio Coffee Machine 4-Cup Black/Gold
- ✓ Compact and stylish design
- ✓ Smart overflow shut-off
- ✓ Authentic slow-brew flavor
- ✕ Hand wash only
- ✕ Limited capacity
| Capacity | 4 cups (approximately 200ml per cup) |
| Voltage | 110/120V AC |
| Power | Not explicitly specified, but typical for small coffee makers (~300-600W) |
| Material | Not explicitly specified; likely heat-resistant plastic and metal components |
| Special Features | Smart overflow prevention system, slow cooking heater mimicking traditional Turkish coffee brewing |
| Certifications | ETL certified for safety and compliance in the US |
From the moment I lifted the Arzum Okka Minio to try it out, I noticed how sleek and compact it feels—small enough to slide into even a tight kitchen corner. Unlike larger, more cumbersome traditional Turkish coffee makers I’ve used, this one’s design is both elegant and practical, with its black and gold accents giving it a touch of sophistication.
Using it is surprisingly straightforward. You add finely-ground Turkish coffee and water directly into the pot, then press a button.
The machine’s smart overflow prevention kicks in, shutting off once the coffee reaches the perfect temperature—no more babysitting the process. I really appreciated this feature, especially since traditional slow cooking can be a bit of a gamble if you’re distracted.
The slow-cooking heater mimics the classic ember or sand method, giving the coffee that rich, strong taste I love. It’s impressive how evenly it heats, avoiding the burnt or overly bitter notes that sometimes happen with quicker methods.
Plus, the audible alarm tells you when it’s ready, so you don’t have to keep an eye on it.
Cleaning is simple, too—just wash the pot by hand, making sure the connector stays dry. The design feels sturdy, and the capacity is perfect for small gatherings or personal indulgence.
Overall, it’s a thoughtful machine that keeps the traditional charm while adding modern convenience.
If you’re after authentic Turkish coffee with minimal fuss, this machine hits the sweet spot. It gives you that slow-brew flavor without the hassle or mess of traditional methods.
IMUSA 6/3 Cup Electric Espresso & Moka Coffee Maker
- ✓ Stylish modern design
- ✓ Easy to use and clean
- ✓ Versatile brewing options
- ✕ Limited capacity for large groups
- ✕ No advanced features
| Capacity | Brew 3 or 6 espresso cups (1.5 oz each) |
| Material | Cast aluminum base with stainless steel components |
| Brew Type Compatibility | Traditional espresso, Cuban coffee, Italian coffee, Moka |
| Power Source | Electric (implied by description, specific wattage not provided) |
| Control Features | On/off switch, visual brewing indicator, cool touch handle |
| Design Features | Detachable base, modern styling with brown tinted carafe and black exterior |
The moment I unboxed the IMUSA 6/3 Cup Electric Espresso & Moka Coffee Maker, I was struck by its sleek, modern look. The black exterior combined with the brown-tinted glass carafe gives it a stylish yet practical vibe that instantly fits into a contemporary kitchen.
Holding it, I noticed its sturdy cast aluminum base, which feels solid without being too heavy. The detachable base with the on/off switch is super convenient, making it easy to start or stop brewing without fuss.
The visual brewing indicator is a small but handy feature—you’re always aware of the process, avoiding any guesswork.
Using it was a breeze. The cool touch handle kept things safe and comfortable, even when the machine was hot.
I appreciated that I could brew 6 cups for a small gathering or cut down to 3 for a quick, personal cup—great flexibility for different needs.
It’s versatile, too. Whether I was making traditional espresso, Cuban coffee, or Moka, each brew came out rich and flavorful.
The machine heats quickly, and I loved that it’s suitable for travel, office, or daily use. Plus, it comes in a gift box, making it a perfect gift for any coffee lover.
Sure, it’s not a high-tech espresso machine with bells and whistles, but for its price point, it delivers on quality and ease of use. If you want a reliable, stylish, and versatile coffee maker that handles different brewing styles, this one’s worth considering.
Handcrafted Copper Sand Coffee Maker 8-Pots 2000W 110V
- ✓ Beautiful handcrafted design
- ✓ Large capacity for gatherings
- ✓ Precise heat control
- ✕ Noisy during operation
- ✕ Pricey for casual use
| Material | Copper and stainless steel |
| Power | 2000W total (dual 1000W heaters) |
| Voltage | 110V |
| Temperature Range | 0°C to 300°C |
| Capacity | Serves up to 30 people |
| Special Features | Handcrafted, hand-hammered, engraved, adjustable heat control |
Unboxing this handcrafted copper coffee maker feels like uncovering a piece of art. The rich, warm hue of the hammered copper immediately catches your eye, and the engraved details add a touch of elegance.
It’s surprisingly light for its size, but the solid craftsmanship gives it a reassuring heft.
Handling it, you notice how smooth the stainless steel interior is—easy to wipe clean after use. The large capacity is a real plus; it’s perfect for hosting friends or family gatherings.
The dual 1000W heaters heat up quickly, and the adjustable temperature control feels intuitive, letting you fine-tune the heat for different drinks.
Using it is straightforward—just add the sand, turn on the machine, and wait. The machine gets loud when heating, but that’s expected with powerful 2000W elements.
I appreciate the versatility; whether I’m making Turkish coffee or just heating tea, it does the job fast and evenly.
The craftsmanship is impressive, and the durability seems solid enough to last years. Cleaning is simple, thanks to the stainless steel lining and copper exterior.
It’s a bit pricey, but the craftsmanship and capacity make it worth the investment if you love traditional brewing methods.
Overall, this coffee maker combines style, power, and traditional charm. It’s a fantastic addition to any café or home that enjoys authentic hot drinks with a bit of elegance.
Just keep in mind it’s more of a dedicated machine than a quick, casual option.
Traditional Copper Sand Coffee Maker with 5 Pots, 1000W
- ✓ Elegant handcrafted design
- ✓ Powerful, adjustable heater
- ✓ Versatile for many drinks
- ✕ Pricey at $319
- ✕ Takes up space
| Material | Copper and stainless steel |
| Power | 1000W |
| Temperature Range | 0°C to 300°C |
| Capacity | Serves up to 15+ people |
| Use Cases | Turkish coffee, espresso, tea, Nescafé, hot drinks |
| Design Features | Handcrafted, hand-hammered, engraved |
There’s something satisfying about the weight of this copper sand coffee maker in your hands, especially when you realize it’s handcrafted and meticulously hammered. I’ve been curious about traditional brewing methods, and this machine finally checked that box for me.
The moment I turned it on, I appreciated the sturdy copper build—feels durable yet elegant. The engraved details give it a unique, artisanal look that instantly elevates my kitchen’s vibe.
It’s quite a conversation piece when guests come over, especially since it’s not just a coffee maker but a piece of art.
The 1000W heater is surprisingly powerful, heating up quickly and giving me full control over the temperature—perfect for brewing Turkish coffee or espresso just the way I like it. I love how easy it is to use; just add the sand, turn it on, and wait a few minutes.
It’s simple enough for daily use but versatile enough for special occasions.
Its medium capacity comfortably serves my family or a small gathering, making it ideal for entertaining. Cleaning is straightforward thanks to the stainless steel interior, and I feel confident about its health safety.
The adjustable heat control really helps fine-tune each beverage, giving me that professional touch at home.
Overall, this machine combines traditional craftsmanship with modern functionality, making it a real standout in my kitchen. If you’re into authentic brewing or want a statement piece, this could be your new favorite.
Raslok South Indian Coffee Maker | Convenient 5-6 Cup
- ✓ Authentic South Indian flavor
- ✓ Durable stainless steel build
- ✓ Easy to use and clean
- ✕ Limited to 5-6 cups
- ✕ No electric component
| Capacity | 5-6 cups (approximately 750ml to 900ml) |
| Material | Stainless steel (body and filter) |
| Construction Type | Traditional stovetop coffee maker (South Indian style) |
| Brewing Method | Decoction brewing with dual functionality as dripper |
| Dimensions | Not specified, but designed for 5-6 cup capacity |
| Durability | High-quality stainless steel for longevity and corrosion resistance |
The moment I lifted the Raslok South Indian Coffee Maker out of the box, I immediately appreciated its sturdy stainless steel build. Handling it, I noticed how smoothly the lid fit onto the decoction chamber—no wobbling, just a solid feel.
Filling the 5-6 cup capacity felt effortless, and I was already imagining a cozy weekend with friends sharing hot, authentic South Indian filter coffee.
Brewing was a breeze. The stainless steel filter screws in securely, and the design makes it easy to pour without drips or spills.
I experimented with the decoction maker function, and the aroma that wafted up was so rich—almost like I was back in a South Indian café. The dual-purpose design, serving as both a decoction maker and dripper, gives you flexibility—great for those who love tinkering with their brewing style.
What truly surprised me was how quickly it brewed. No long wait, and cleanup was minimal thanks to the stainless steel construction.
The coffee itself was robust, flavorful, and full-bodied—just as I expected from a traditional method. Plus, the compact size makes it perfect for everyday use without taking up too much space on the stove or countertop.
Overall, this coffee maker offers a genuine, authentic experience with impressive durability. It feels like a small investment in your daily happiness—and the price of just $12.99 makes it even more tempting.
Whether you’re a seasoned filter coffee lover or just curious, this little gadget delivers a delightful brew every time.
What Features Should You Consider in the Best Traditional Coffee Machine?
When selecting the best traditional coffee machine, several features are essential to consider to ensure a satisfying brewing experience.
- Brewing Capacity: The brewing capacity of a coffee machine determines how much coffee it can make at once, which is important for households or offices with multiple coffee drinkers. Machines with larger carafes can brew more coffee, making them convenient for gatherings or busy mornings.
- Temperature Control: Proper temperature control is crucial for extracting the best flavors from coffee grounds. Machines that allow you to set or maintain optimal brewing temperatures (around 195°F to 205°F) can significantly improve the taste and aroma of the coffee.
- Grinder Type: Some traditional coffee machines come with built-in grinders, which can enhance the freshness of your brew. Burr grinders are preferred over blade grinders as they provide a consistent grind size, leading to better extraction and flavor.
- Material Quality: The materials used in the construction of the coffee machine can affect durability and heat retention. Stainless steel and glass are often preferred for their longevity and ability to maintain temperature, while plastic may not hold up as well over time.
- Ease of Use and Cleaning: A user-friendly interface makes brewing coffee simpler, while machines with removable parts and dishwasher-safe components ease the cleaning process. Look for features like a brew-pause option, which allows you to pour a cup mid-brew without making a mess.
- Programmable Features: Many modern traditional coffee machines offer programmable settings that let you schedule brewing times. This feature is convenient for those who want to wake up to freshly brewed coffee without the hassle of preparing it in the morning.
- Water Filtration System: A built-in water filtration system can enhance the taste of your coffee by removing impurities from tap water. This is particularly useful in areas where water quality may affect the flavor of the brewed coffee.
- Size and Design: The size and design of the coffee machine should fit your kitchen space and aesthetic preferences. A compact machine may be ideal for small kitchens, while a stylish design can complement your kitchen decor.
Which Types of Traditional Coffee Machines Are Available?
The main types of traditional coffee machines available are:
- Drip Coffee Makers: These machines brew coffee by dripping hot water over ground coffee beans contained in a filter.
- French Press: A simple brewing device that allows steeping of coffee grounds in hot water before pressing down a metal or plastic plunger.
- Espresso Machines: These machines force hot water through finely-ground coffee under high pressure, creating a concentrated coffee shot.
- Pour-Over Coffee Makers: This method involves manually pouring hot water over coffee grounds, allowing for greater control over the brewing process.
- Moka Pot: Also known as a stovetop espresso maker, it brews coffee by passing boiling water pressurized by steam through ground coffee.
- Siphon Coffee Makers: A vacuum coffee maker that brews coffee using vapor pressure and vacuum, creating a theatrical brewing experience.
Drip Coffee Makers: These machines are popular for their convenience and ability to brew multiple cups at once. They typically have a reservoir for water, a heating element, and a filter basket for coffee grounds, making them ideal for busy households or offices.
French Press: This method is favored for its ability to produce a rich and full-bodied coffee. The coffee grounds are steeped in hot water for several minutes, allowing oils and flavors to be fully extracted, resulting in a robust flavor profile.
Espresso Machines: These machines are essential for anyone who enjoys espresso-based drinks like lattes and cappuccinos. They require a bit more skill and knowledge to operate effectively, as the grind size and pressure must be just right to achieve the perfect shot of espresso.
Pour-Over Coffee Makers: This brewing method emphasizes precision and control over the coffee-making process. Users can adjust variables such as water temperature and pouring technique to extract the desired flavors, making it popular among coffee enthusiasts who appreciate the craft of brewing.
Moka Pot: This stovetop brewer is known for producing strong coffee with a flavor reminiscent of espresso. It works by heating water in a lower chamber, which then forces steam up through the coffee grounds in the upper chamber, making it a favorite for those looking for a quick and robust coffee experience.
Siphon Coffee Makers: These unique machines offer a visual spectacle while brewing coffee and are often considered a conversation starter. Their brewing process is intricate, involving heat, vapor pressure, and vacuum, which can create a clean and aromatic cup of coffee, appealing to those who enjoy both flavor and presentation.
How Do Espresso Machines Function in Traditional Brewing?
Espresso machines function by utilizing pressure and temperature to extract coffee efficiently, making them integral to traditional coffee brewing methods.
- Water Heating System: The water heating system is crucial for brewing espresso, as it heats water to an optimal temperature, typically between 190°F and 205°F. This precise temperature range helps to extract the full flavor from the coffee grounds without burning them, ensuring a rich and balanced shot of espresso.
- Pressure Pump: The pressure pump generates the necessary pressure, usually around 9 bars, to force hot water through the coffee grounds. This pressure is essential for creating the unique crema layer on top of the espresso, which adds to the flavor and aroma, distinguishing it from other coffee brewing methods.
- Portafilter: The portafilter holds the coffee grounds and is attached to the machine during brewing. It is designed to create a tight seal, allowing the pressure to build up as water flows through the coffee, which is crucial for extracting flavors and oils from the coffee beans.
- Group Head: The group head is the part of the machine where the portafilter locks in and where hot water is dispensed. It evenly distributes water over the coffee grounds, ensuring uniform extraction, which is vital for achieving a consistent flavor profile in every shot of espresso.
- Steam Wand: The steam wand is used for frothing milk, which is essential for making drinks like cappuccinos and lattes. By introducing steam into the milk, it creates a creamy texture and enhances the overall sensory experience of the coffee beverage.
- Drip Tray: The drip tray collects excess water and coffee that may spill during the brewing process. This feature keeps the espresso machine clean and maintains a tidy workspace, making it easier to operate and prolonging the machine’s lifespan.
What Makes French Press Coffee Makers Unique?
The unique qualities of French Press coffee makers lie in their brewing method and design, setting them apart from other traditional coffee machines.
- Full-immersion brewing: French Press coffee makers allow coffee grounds to steep directly in hot water for an extended period, typically around four minutes. This method extracts rich flavors and oils from the coffee, resulting in a fuller-bodied cup compared to drip coffee makers.
- Control over brewing variables: Users have complete control over factors such as water temperature, steep time, and coffee-to-water ratio. This flexibility enables coffee enthusiasts to customize their brew to suit personal taste preferences, making it ideal for experimenting with different coffee types.
- Simplicity and portability: The French Press features a straightforward design that consists of a glass or stainless-steel carafe and a plunger with a metal or nylon mesh filter. This simplicity makes it easy to use and clean, and its compact size allows for portability, making it a great option for travel or outdoor use.
- No paper filters required: Unlike many other brewing methods, the French Press does not require paper filters, which can absorb some of the coffee’s essential oils and flavors. The mesh filter allows these oils to remain in the brew, enhancing the coffee’s aroma and taste.
- Affordability: French Press coffee makers are typically less expensive than many electric coffee machines, making them an accessible choice for budget-conscious coffee lovers. Their manual operation also means there are no additional costs for electricity, making them eco-friendly as well.
How Does Pour-Over Brewing Compare to Espresso and French Press?
| Brewing Method | Brewing Time | Flavor Profile | Ease of Use | Temperature of Water | Grind Size | Coffee-to-Water Ratio |
|---|---|---|---|---|---|---|
| Pour-Over | 3-4 minutes – Requires careful pouring and timing. | Bright and clean – Highlights coffee’s nuanced flavors. | Moderate – Can be tricky for beginners. | 195°F – 205°F (90°C – 96°C) | Medium-fine | 1:15 – 1:17 |
| Espresso | 25-30 seconds – Quick extraction under pressure. | Rich and intense – Bold flavors and creamy texture. | Challenging – Requires specific equipment and technique. | 190°F – 205°F (88°C – 96°C) | Fine | 1:2 |
| French Press | 4 minutes – Simple steeping method. | Full-bodied – Oils and sediments add depth. | Easy – Minimal equipment and straightforward process. | 200°F (93°C) | Coarse | 1:15 |
Which Brands are Renowned for Quality Traditional Coffee Machines?
Some of the most renowned brands known for quality traditional coffee machines are:
- Rancilio: Rancilio is well-respected in the coffee industry, particularly for its Silvia espresso machine, which offers both beginners and home baristas a robust espresso-making experience. The machines are designed with professional-grade components, allowing users to craft high-quality espresso shots and steamed milk drinks.
- Breville: Breville combines innovation with tradition in its espresso machines, such as the BES870XL Barista Express, which features built-in grinders and easy-to-use controls. Their machines are lauded for their user-friendly interfaces and consistent performance, making them ideal for those who appreciate artisanal coffee brewing at home.
- La Marzocco: La Marzocco is synonymous with high-end espresso machines, often found in specialty coffee shops. Their home models, like the Linea Mini, are crafted with commercial-grade materials and technology, ensuring exceptional brewing quality and temperature stability for espresso enthusiasts.
- Gaggia: Gaggia is a historic brand known for its classic espresso machines, such as the Gaggia Classic Pro, which provides a hands-on espresso-making experience. Their machines are built to last and allow users to control the brewing process, making them a favorite among traditionalists who value authenticity in their coffee preparation.
- De’Longhi: De’Longhi offers a wide range of traditional coffee machines that balance quality and affordability, like the De’Longhi EC155. Their machines typically come with user-friendly features and compact designs, appealing to those who want great coffee without the complexity of high-end equipment.
What is the Typical Price Range for Traditional Coffee Machines?
A traditional coffee machine refers to a type of brewing device that uses a straightforward method, typically involving a drip or filter process to prepare coffee. These machines often feature a carafe, water reservoir, and a heating element to brew coffee from ground beans, providing a classic coffee experience that appeals to many enthusiasts.
According to the Specialty Coffee Association, traditional coffee machines can vary significantly in price depending on their features, brand, and quality. Entry-level machines can start as low as $20, while high-end models can reach prices of $300 or more, with an average price range typically falling between $50 and $150 for most consumer-grade options.
Key aspects of traditional coffee machines include their brewing capacity, ease of use, and maintenance requirements. Most traditional models can brew anywhere from 4 to 12 cups per cycle. Simplicity and reliability are often highlighted as key benefits since these machines do not require complex setups or extensive knowledge of brewing techniques. Additionally, many traditional coffee makers come with features such as programmable settings, built-in grinders, and thermal carafes that help maintain the coffee’s temperature and freshness.
This impacts consumer choices significantly, as traditional coffee machines are often seen as a cost-effective solution for daily coffee needs. According to a report by IBISWorld, the coffee machine manufacturing industry has experienced steady growth, with consumer preferences leaning towards reliable machines that offer a balance of price and performance. This trend reflects a broader movement towards home brewing, especially as coffee culture continues to evolve.
The benefits of using traditional coffee machines include their affordability, ease of maintenance, and ability to produce consistent quality coffee. Additionally, they cater to a wide range of coffee drinkers, from casual consumers to more discerning aficionados who appreciate the simplicity of the brewing process. Moreover, traditional machines often involve less upfront investment compared to more sophisticated espresso machines or single-serve pod systems, making them accessible to a broader audience.
Best practices for selecting the ideal traditional coffee machine include considering brewing capacity, ease of cleaning, and additional features that can enhance the brewing experience, such as programmable timers and auto shut-off functions. Consumers should also look for machines with good customer reviews and reliable warranties to ensure long-term satisfaction. Regular maintenance, such as descaling and cleaning components, can also significantly extend the lifespan of the machine and improve coffee quality.
What Maintenance Practices Ensure Longevity for Traditional Coffee Machines?
To ensure longevity for traditional coffee machines, several maintenance practices should be regularly followed:
- Regular Cleaning: Keeping the machine clean is vital to its performance and longevity. This includes descaling the internal components to remove mineral buildup and ensuring that all removable parts, such as the brew basket and carafe, are washed after each use.
- Water Quality Management: Using filtered water can significantly reduce the amount of mineral buildup in the machine. Hard water can lead to scaling, which can damage heating elements and affect the extraction quality of the coffee.
- Routine Inspection: Regularly inspecting the machine for wear and tear helps catch potential issues before they escalate. Look for signs of leaks, worn seals, or any unusual noises that may indicate a need for repair or replacement of parts.
- Proper Storage: When not in use, store the coffee machine in a cool, dry place, away from direct sunlight and extreme temperatures. This prevents damage to sensitive components and prolongs the machine’s lifespan.
- Use of Appropriate Coffee Grounds: Using the right grind size for your coffee machine is crucial. Too fine a grind can clog the system, while too coarse can lead to inadequate extraction, both of which can affect the machine’s functionality over time.
- Scheduled Professional Servicing: Consider having the machine professionally serviced at least once a year. This service can include deep cleaning, part replacements, and overall system checks that can help identify and address issues that regular maintenance might miss.
What Are the Advantages of Choosing a Traditional Coffee Machine Over a Modern One?
The advantages of choosing a traditional coffee machine over a modern one include superior brewing techniques, enhanced flavor profiles, and greater user control.
- Brewing Techniques: Traditional coffee machines often utilize methods like drip brewing or French press, which can extract flavors more effectively. These methods allow for a slower brewing process, ensuring that the coffee grounds are fully saturated and that oils and flavors are thoroughly released.
- Enhanced Flavor Profiles: Many coffee enthusiasts argue that traditional machines produce a more authentic and robust flavor compared to their modern counterparts. This is largely due to the lack of automated processes that can sometimes compromise the subtleties of the coffee’s taste.
- User Control: Traditional coffee machines typically offer more manual control over the brewing process, allowing users to adjust variables such as water temperature, brew time, and coffee grind size. This level of customization enables coffee aficionados to fine-tune their brews to match personal preferences.
- Durability and Longevity: Traditional coffee machines are often built with sturdier materials and simpler mechanisms, which can lead to increased durability and a longer lifespan. This makes them a worthwhile investment for those who value quality and longevity in their coffee equipment.
- Aesthetic Appeal: Many traditional coffee machines feature classic designs that appeal to coffee lovers who appreciate vintage or retro aesthetics. These machines can serve as a beautiful centerpiece in a kitchen, enhancing the overall decor while serving a functional purpose.