HARIO KA-KU COFFEE BOTTLE
The HARIO Ka-Ku Coffee Bottle (1 000 mL) is a square-shaped cold-brew jug with a fine mesh filter and sealable stopper, made from durable resin. Its slim, flat design makes it easy to store on its side in the fridge — perfect for batch brewing and clean pouring.
Large 1 L Cold-Brew Capacity
Brew up to eight cups in one batch — perfect for shared coffee or batch prep
Space-Saving Square Design
Slim, square-shaped body fits easily lying down in the fridge or against other bottles
Built-in Fine Mesh Filter
The integrated polyester mesh strainer ensures fine-level filtration for clean cold brew without grit
Secure Seal & Storage
Silicone stopper and tight-fitting lid keep your cold brew fresh and prevent leaks during steeping or transport
Specifications
- Colour / Finish: Pale Grey (or similar)
- Capacity: 1 000 mL (finished brew volume)
- Dimensions: 90 mm (width) × 90 mm (depth) × 320 mm (height)
- Weight (with packaging): ≈ 400 g
- Body Material: PCT resin
- Top / Strainer Frame: Polypropylene
- Filter Mesh: Polyester
- Stopper / Packing: Silicone rubber
- Filter: Removable mesh inside bottle
- Origin: Manufactured in Japan
Use Cases & Benefits
- Home Cold Brew Brewing: Make your weekly batch of cold brew concentrate or ready-to-drink coffee in a single go, then store it neatly in your fridge door.
- Café or Office Batch Production: Brew large quantities of smooth, low-acid cold brew overnight, then easily serve from the same bottle without transferring to another container.
- Recipe Testing & Quality Control: Use the bottle’s internal mesh filter to evaluate extraction ratios and clarity during recipe development or tasting sessions.
- Portable Cold Brew for Events: Lightweight and durable, the Ka-Ku bottle can be used to transport cold brew to pop-ups, meetings or catering setups.
- Sustainable Brewing: As a reusable immersion brewer, it eliminates the need for single-use filters or paper — helping reduce waste and streamline your brewing process.




