The Kalita Wave 185 is the larger of the two Wave sizes made by Kalita, a Japanese brewer with more than sixty years of history in filter coffee. Its name comes from the wavy, ridged paper filter that sits inside a flat-bottomed steel or ceramic dripper with three small holes at the base.
The Wave's design solves one of pour-over's oldest frustrations: uneven extraction at the edges. The flat bed keeps the coffee distributed in a shallow, even layer, and the three small holes restrict flow enough that grind size and pour rate matter less than they do on a V60. The wavy filter barely touches the walls, so water drains almost entirely through the bed and not down the sides. The result is a brew that is notably sweeter, more balanced, and more repeatable than a cone — if less brilliant in its high notes.
A typical 185 recipe uses 25 g of coffee to 400 g of water (1:16), a medium grind, water at 93–96 °C, and a total brew time of 3:30 to 4:30. Four controlled pours, each waiting until the previous is nearly drawn down, give the cleanest cup. The Wave is the brewer Blue Bottle built its reputation on and the one recommended for beginners who want pour-over clarity without the technique curve.
