April Flat Bottom Paper vs Origami Wave Paper

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 155, Kalita Wave 185

Flow

Unknown · Unknown

Material

Paper · Cellulose

Reuse

Single-use

Availability

In production

How it brews

Origami's wave-shaped paper for its drippers, a cellulose sheet in S (155) and M (185) sizes — the flat-bottom, crinkled-wall cup that fits the Kalita-Wave seat rather than a cone. It stands the bed on the fluted paper away from the walls the way Wave papers do, and it interchanges with Kalita-Wave 155/185 papers of the matching size. Origami publishes no fast/medium/slow class for it, so flow is left unrated. (Origami also sells a conical paper for the same dripper — this is the wave one.)