April Flat Bottom Paper vs Fellow Stagg [XF]

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 taller variant of Fellow's flat-bottom fluted paper, cut for the larger 2-4 cup Stagg [XF]. Fellow explicitly states that Kalita Wave 185 and Blue Bottle papers also work in the XF, which is why we map its seat to Kalita Wave 185 — the Stagg paper is steeper than a genuine Wave, so the token records endorsed cross-compatibility rather than a shared mold. No manufacturer flow class is published, so flow is left unrated.