The Hario Clear Slow Drip Coffee Brewer is a cold brew tower that extracts coffee through a slow, drop-by-drop water feed rather than steeping, producing a smooth, low-bitterness cold brew concentrate in a single 780ml batch. All brewing elements are borosilicate glass set in a clear acrylic stand, and the tower is made in Japan.
Cold brew towers work on a fundamentally different principle from immersion cold brew: water drips one drop at a time through the coffee bed, drawing out soluble compounds gradually rather than letting grounds sit submerged for hours. The result tends to be cleaner and brighter in the cup than immersion cold brew, with less of the heavy body that can come from long steeping. The Hario Clear's adjustable spout lets you set the drip rate, giving you direct control over extraction speed and, by extension, the strength and character of the finished brew.
The upper bowl, lower bowl, lid, and collection pot are all borosilicate heatproof glass. Borosilicate glass is chemically inert and does not absorb flavors or odors, so the brewer stays neutral across many uses and cleans thoroughly without retaining residue. The stainless steel faucet and metal filter complete the brewing path without introducing plastic contact at any point where coffee is flowing.
The clear methacrylate resin stand frames the glass components in a way that makes the slow drip process visible from every angle. At 455mm tall with a 150mm footprint, the tower is a countertop presence rather than a tucked-away appliance. For buyers who want brewing equipment that is also worth looking at, the all-clear construction makes the extraction process part of the aesthetic.
| Specification | Detail |
|---|---|
| Capacity | 780 ml |
| Dimensions | W150 x D129 x H455 mm |
| Upper bowl, lower bowl, lid, pot | Borosilicate heatproof glass |
| Faucet and metal filter | Stainless steel |
| Lid seal, faucet joint, cleat | Silicone rubber |
| Stand | Methacrylate resin (clear acrylic) |
| Measuring spoon | Polypropylene |
| Origin | Made in Japan |
This brewer suits home coffee enthusiasts who want to make cold brew with more control and clarity than immersion methods allow, and who have counter space for a 455mm-tall tower. It is also a good fit for anyone who values all-glass construction and wants brewing equipment that is visually distinctive on the counter.
The Hario Clear is not suited to high-volume or commercial cold brew production; its 780ml capacity is a single home-scale batch. It is not a hot-brew device and does not connect to any heat source. It does not produce espresso-style concentrate.
The Hario Clear Slow Drip Coffee Brewer uses a drop-by-drop extraction method, and total brew time depends on the drip rate you set via the adjustable spout. Slower drip rates extend extraction time and typically produce a stronger, more concentrated result. Expect a session measured in hours rather than minutes.
The Hario Clear Slow Drip Coffee Brewer is designed for cold or cool water, which is the basis of the cold brew process. It is not intended for use with hot water and is not a hot-brew tower.
The included product manual covers recommended grind settings for the Hario Clear Slow Drip Coffee Brewer. As a general principle of drip cold brew, a medium-coarse grind is a common starting point, but the ideal grind depends on your drip rate and the coffee you are using; refer to the included manual for Hario's guidance.
Dishwasher compatibility is not specified for the Hario Clear Slow Drip Coffee Brewer. The included product manual is the authoritative source for cleaning instructions; hand washing is the safest default for borosilicate glass components with silicone seals.
The Hario Clear Slow Drip Coffee Brewer ships with the glass upper bowl, lower bowl, lid, and collection pot; the stainless steel faucet and metal filter; the clear acrylic stand; silicone seals; and a polypropylene measuring spoon.
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