The Problem with Paper Filters

In 2017, Joaquim Morató and Lambert Guix — both engineers by training, both deeply embedded in Barcelona's specialty coffee scene — set out to solve a problem that most coffee drinkers had never thought to question. Paper filters for pour-over brewing had barely changed in decades. The standard V60 paper filter, the Chemex bonded filter, the Kalita Wave filter — all of them worked well enough, but none of them had been designed from first principles by people asking what a filter optimised for specialty coffee extraction would look like if you started from scratch.

The answer that Morató and Guix arrived at was the SIBARIST FAST filter — a cone-shaped paper filter made from a proprietary blend of abaca fibre (from sustainably managed plantations in Ecuador and the Philippines) and European pine cellulose, manufactured on-site in Sora, Spain under direct quality control. The FAST designation refers to the filter's defining characteristic: a permeability that allows water to flow through 27–40% faster than conventional V60 filters, depending on grind size, ratio, and pouring technique.

The counterintuitive implication of faster flow is that the brewer can use a finer grind — extracting more from the coffee without choking the filter or producing astringency. Traditional filters at fine grinds create excessive flow resistance and uneven extraction. SIBARIST FAST's high permeability allows finer grinds to extract cleanly, producing, in the founders' words, "fuller, richer extractions while decreasing bitterness."

From Filters to Roasting: A Logical Extension

A company that begins with the conviction that every variable in coffee extraction matters — including the paper through which the water flows — is not going to be satisfied stopping at filter design. SIBARIST's roasting operation is the natural extension of its engineering-meets-specialty philosophy: if you are going to care about how water flows through a filter, you are going to care about the quality of the coffee that goes into the brewer. The roasting operation sources single-origin specialty lots with the same attention to material quality and traceability that defines the filter manufacturing process.

SIBARIST as a roaster sits at the more technically rigorous end of the Spanish specialty market — a country that is rapidly developing its specialty coffee infrastructure, driven in part by Barcelona's role as one of Europe's most dynamic food and design cities. The roastery's output reflects both Spanish sensibility and an engineering mindset: clean, precise, expressive coffees that pair naturally with the SIBARIST FAST filter experience.

The FAST Filter: How It Changed Competition Coffee

The moment that validated SIBARIST's FAST filter most publicly was the World Brewers Cup — the World Coffee Championship for filter brewing, where competitors present a prepared service and a hand-brewed filter coffee to a panel of sensory judges. In the period following the FAST filter's launch, the top three Brewers Cup competitors used SIBARIST filters — an adoption rate that reflected genuine competitive advantage, not sponsorship. Morató has described this moment directly: "It was super exciting and an important moment for our team. This achievement reaffirmed our work and made us so proud."

Competition adoption is the most credible form of specialty coffee product validation. Competition baristas have no financial incentive to choose inferior tools — their placement depends on every variable being optimised. The fact that the world's best filter brewers independently converged on SIBARIST FAST as their filter of choice is the most honest possible review.

Made in Spain: The Manufacturing Philosophy

SIBARIST's decision to manufacture on-site in Sora — a small industrial town in inland Catalonia — rather than outsourcing to established Asian paper manufacturers is a deliberate choice with direct quality implications. "The fact of being a manufacturer and having the process super close and controlled" is, in Morató's words, one of the defining elements of SIBARIST's philosophy. Every batch of filters is produced under the same quality control as a pharmaceutical or precision engineering product. The result is a filter that performs consistently across batches — which matters when competition brewers and professional cafés are depending on it.

The abaca fibre sourced from Ecuador and the Philippines is traceable to specific certified plantations where the crop is replanted after each harvest. The European pine cellulose is sourced within the EU. The PLA (polylactic acid) binder used in some filter constructions is vegetable-derived. The entire material chain reflects the same engineering attention that defines the filter's performance characteristics.

"Last year the top three Brewers Cup competitors used a SIBARIST filter. It was super exciting — this achievement reaffirmed our work and made us so proud." — Joaquim Morató, SIBARIST