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The Fermentation Project
Can Fermentation Turn One Coffee Into Four?
Taste four expressions of the same coffee in a global fermentation experiment.
The Experiment
One coffee begins four journeys.
Coffee from a single Guatemalan lot was divided into four portions. The farm, harvest, varieties and origin remained the same. Each portion then followed a different processing path.
By tasting the four coffees together, you can explore how fermentation influences aroma, acidity, sweetness, body and flavor.
Coffee 01
The Reference
Mechanically demucilaged to minimize the extended fermentation stage and provide a reference point for the experiment.
Coffee 02
The Wild
Fermented using the microorganisms naturally present on the coffee and within its processing environment.
Coffee 03
The Bacteria
Inoculated with a selected Lactobacillus culture to explore how managed bacterial fermentation influences the cup.
Coffee 04
The Yeast
Inoculated with a selected Saccharomyces yeast culture to explore its influence on aroma, sweetness, body and complexity.
The Collaboration
Built through coffee, science and community.
James Hoffmann created the global tasting concept and brought participating roasters and coffee drinkers together.
Lucia Solis brought her expertise in microbiology and coffee fermentation to the project’s processing design.
Evoke Coffee Lab roasts the four coffees and transforms the experiment into a guided tasting experience.
Taste First. Reveal Later.
You complete the experiment.
Taste the four coded coffees side by side, record what you experience, choose your favorite and reveal the process behind each cup afterward.
Our Signature Blend is an exclusive, subscription-only offering—crafted for those who seek something truly exceptional. This is the roaster’s personal selection, the result of a meticulous journey to find and blend coffees that don’t just complement each other—they elevate one another. Each component is handpicked for its unique character, then refined through countless iterations to achieve perfect balance, depth, and clarity. The result is a cup that’s vibrant yet comforting, complex yet approachable—a sensory experience you won’t find anywhere else. Reserved only for our subscribers, this blend is our way of sharing the best of what we do, with those who crave something unforgettable.