Orea O1 Brewer Baby O

A fast, simple, and highly versatile brewer. Designed to be portable, yet delivers excellent performance at home, in cafes, or at competitions. Most importantly: it enhances the flavor experience.

OREA's flat-bottom brewers are known for their high performance, consistency and for offering an excellent cup of coffee.

The brand focuses on extraction efficiency, designing devices that brew coffee quickly and with higher extraction levels. Attention to detail and continuous design improvements result in a highly precise brewing platform. The BABY O maintains this same standard: it's designed for use with both WAVE and FLAT filters, is compatible with the Negotiator tool, and offers the same consistency, speed, and efficiency as the rest of the OREA brewers.

Characteristics

Original Open Bottom

The original open-bottom design has been used for years in OREA's V4 glass, porcelain, and plastic brewers. This open-bottom design incorporates a lip that holds the filter flat, offering the ideal balance between support and headroom. The paper curves naturally in the center, promoting a more focused flow of water through the coffee bed.

This design creates one of the most distinctive cup profiles: a particularly defined acidity, with a more conical flow pattern over a shallow, flat bed. The result is a "candy" acidity, without sacrificing balance, sweetness, or body.

A benchmark design, widely imitated, but yet to be equaled.

Why a small brewer?

It's a question the brand considered in depth. OREA's original brewer was very small—even smaller than this one—but that format was abandoned after the first batch of V3. Over time, that size has been missed.

Small brewers are especially convenient for single-serve brewing. They allow for greater control over the water flow to the coffee bed, as they make it easier to position the spout of the kettle closer. As hyper-specialty coffee gains popularity, single-serve brewing (8, 10, or 12 grams) is becoming increasingly common. For these types of recipes, a smaller brewer is easier and more precise to use.

Stable device

Traditional OREA flat-bottom designs incorporated a removable base that was typically positioned lower on the device. In the case of the O1, this base has been raised considerably to lower the center of gravity and increase stability during brewing.

The result is a firmer and safer brewer to use, even in small doses and precise pours.

Stable temperature

A smaller brewer means less material acting as a heat sink. This keeps the heat energy within the coffee bed instead of being lost to the outside. While all OREA designs aim to minimize material usage, in this case, the reduced size further reinforces this approach.

The result is a preparation with great thermal stability, which offers the barista greater control over the extraction dynamics.

Which filters should I use?

WAVE Filters

WAVE filters are known for their ease of use, speed, and wide global availability. They allow for greater bypass and airflow, creating a narrower coffee bed. Under similar brewing conditions, they typically result in a less concentrated brew. They are highly valued for their character.plug & playShort extraction times and consistency, making them a practical and reliable option for everyday use.

The O1 is compatible with traditional WAVE size 155 filters and with WAVE SMALL filters.

FLAT Filters

Flat filters offer a different experience, designed to maximize cup quality. They reduce bypass and create a wider, shallower coffee bed, allowing water to flow more evenly through the coffee. This typically results in juicier, sweeter, and fuller-bodied cups. They are a highly valued option for those seeking to explore more expressive flavor profiles and greater control over extraction.

The O1 is compatible with OREA Flat SMALL 155 filters and with Sibarist FAST Flat SMALL 155 filters.

Conclusion

There's no wrong choice: the O1 delivers excellent performance with both filter types. Whether prioritizing convenience and speed with the WAVE filter, or a more sensory and expressive experience with the FLAT filter, the BABY O offers consistent, high-quality results, even for those on the go.

Technical details

Material
Made of durable, BPA-free, transparent TRITAN plastic with a thick insulating wall of over 3 mm.

Weight
The brewer weighs 52g, making it extremely lightweight and easy to carry.

Size
Compact size. It measures 5.9 cm high and 10 cm at the widest point of the base.

Origin
Carefully crafted in Taiwan.

Ability
Optimal for 10–18 g of coffee (160–300 ml), although it can be used from 8 g to 20 g.

Negotiator
Compatible with any V3 negotiator or narrow-form negotiator (V4 or other similar models).

What's included in the box
– OREA O1 Brewer
– Preparation guides

Guides
Access to a growing collection of guides, plus two included in the box itself.

Compatible paper filters
– OREA Wave Small / 155
– OREA Flat Small / 155
– Sibarist Flat Small

Compatible carafes
Compatible with most carafes. Minimum diameter: 5 cm.

Preparation style
Flat-bottom, low-bypass percolation brewer.

Body
Unibody construction: a single solid piece.