The Sibarist B3 Wave filter is a premium flat-bottom paper designed for 2–4 cup brewers such as the Kalita Wave, OREA, and April drippers. Engineered for balanced extraction, it provides a moderate flow rate that sits between ultra-fast papers and traditional filters, making it ideal for achieving clarity with body and sweetness in the cup.
Performance
The B3 filter’s slightly thicker, lower-porosity paper ensures even saturation of the coffee bed and consistent flow during pouring. This design reduces the risk of uneven extraction while allowing more control over brewing variables, including grind size, pour speed, and agitation. Its balanced flow makes it forgiving for various pour-over techniques without sacrificing cup quality.
Flavor Profile
B3 filters produce a clean cup with fuller body compared to high-permeability fast filters. By retaining more oils and fine particles, the filter highlights sweetness, complexity, and depth while maintaining clarity. This makes it particularly suitable for naturally processed or honey-processed coffees, or any bean where you want a richer, more nuanced cup.
Construction & Materials
Made from 100% organic, sustainably sourced fibers and FSC-certified packaging, B3 filters are designed for high performance without imparting paper taste. Their structural integrity supports repeated saturation without collapsing, ensuring consistent extraction for every brew.
The selection of materials and Sibarist's manufacturing process are focused on achieving the highest possible quality over any other factor, while always respecting process sustainability.
The FAST line is composed of a mixture of abaca fiber from plantations in Ecuador and the Philippines (where the product consumed is replanted every year to then be harvested, offering a sustainable process, with batch control and chain of custody), cellulose fiber from European pine plantations (FSC and PEFC) and organic plant-based (non-fossil) polylactic acid.
The main component, abaca fiber, is finer and more porous than other fibers, giving FAST paper good permeability (leading to a higher extraction speed), while offering great tensile and tearing strength in wet conditions, bringing structure and resistance to the composition, with a low substance (less paper). Additionally, the fibers are pulp made from non-wood fibers. This facilitates clean in-plant processing, essential for eliminating the presence of external flavors in the cup and for offering a high-quality filter, while it can also be processed in a more sustainable way.
“This is a product with a history similar to that of a coffee bean. Its whole process is reflected in the cup, in the form of possibilities, irregularities, aromas and flavors. We must measure up.”
