Sibarist OREA (FAST / B3) vs Sibarist FLAT (FAST)

Fits

Flat basket

Flow

Fast · Manufacturer-stated

Material

Paper · Abaca

Reuse

Single-use

Availability

Specialty only

How it brews

Sibarist's abaca flat-bottom paper for OREA drippers, in narrow and wide cuts and offered in both FAST and B3 grades. It sits in the flat-basket family and interchanges with flat papers of the matching fit. The FAST grade is the high-permeability abaca sheet Sibarist rates as fast-draining — good for an open, clean cup where the grind and pour do the steering — while B3 trades speed for more body and retention (both the maker's own framing, not measured here). Specialty, single-use, with the usual rinse.

Fits

Flat basket

Flow

Fast · Manufacturer-stated

Material

Paper · Abaca

Reuse

Single-use

Availability

Specialty only

How it brews

The flat-bottom sibling of the FAST cone: a smooth, non-fluted paper using the same abaca technology, sized S (≈Kalita 155) and M (≈Kalita 185) for wave-style flat drippers, plus a larger size for basket machines. Because the wall is smooth rather than pleated, Sibarist markets it as keeping water in even contact with the whole bed and reducing bypass while still draining fast — a mechanism claim from the maker, not a measured result. It drops into a Kalita Wave 155/185 seat, so it's an option anywhere those papers fit. Single-use, made in Barcelona.