Sibarist
B3 FLAT
View on the maker's site
At a glance
- Fits
- Flat basket
- Flow
- Medium Flow source: Manufacturer-stated
- Material
- Paper
- Reuse
- Single-use
How it brews
The B3 grade of Sibarist's abaca flat-bottom paper (associated with Matt Winton's flat-bed method), in S and M. Unlike the FAST papers, B3 is a lower-porosity sheet Sibarist rates as medium flow, trading some drainage speed for more body and retention across the flat bed. That medium class is the maker's own framing, not independently measured. It fits the flat-basket seat and interchanges with other flat papers of that fit; a pre-brew rinse is common.