April Flat Bottom Paper vs Kalita Wave 185

Fits

Flat basket, Kalita Wave 155, Kalita Wave 185

Flow

Fast · Manufacturer-stated

Material

Paper · Cellulose

Reuse

Single-use

Availability

Specialty only

How it brews

The Copenhagen roastery's own flat-bottom paper, sold Small (≈Kalita 155 / Origami S) and Large (size 175, for the April plastic brewer). It's cut to sit deep with a wide base and is marketed as flowing faster than conventional flat papers — that speed claim is April's, kept as a class rather than a number here. One honest ambiguity: older retailer copy described April filters as using Sibarist's abaca FAST technology, while the current listing says virgin wood pulp (cellulose); we record cellulose per the direct listing but don't treat abaca as confirmed. It drops into a Kalita Wave 155/185 seat, so it interchanges with those papers.

Fits

Kalita Wave 185

Flow

Unknown · Unknown

Material

Paper · Cellulose

Reuse

Single-use

Availability

In production

How it brews

The larger (2-4 cup) Wave paper — same crinkled flat-bottom cup as the 155, scaled up for the 185 dripper. The flat bed and three small drain holes hold the coffee off the walls and reward a steady, unfussy pour, which is why the Wave is a go-to when you want repeatability over a cone's higher ceiling. Kalita doesn't publish a flow class and there's no dependable within-seat ranking, so flow is left unrated here rather than invented. The 185 seat is widely shared: OREA Wave, the larger Stagg (XF) and Blue Bottle papers all drop into it.