Guatemala
James Hoffmann's The Fermentation Project | Quartet Box
Roasted by Glen Lyon Coffee
A boxed selection featuring four different processes of the same single origin coffee to explore how processing affects flavor.
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Glen Lyon Coffee no longer has this coffee in stock. We keep it here for reference.

From the roaster
A boxed selection featuring four different processes of the same single origin coffee so that Glen Lyon Coffee lovers can participate in The Fermentation Project by James Hoffmann. Perfect for those that want to learn more about how coffee processes affect the flavour in the finished cup. The bundle is available as whole beans only.
— Glen Lyon Coffee
Context
James Hoffmann's The Fermentation Project | Quartet Box represents a focused exploration of processing techniques applied to high-quality harvests. Produced by Glen Lyon Coffee, this collection highlights the diverse potential of beans sourced from Guatemala. While traditional washed processing is common in the region, experimental fermentation methods are increasingly used to push the boundaries of flavor development, often resulting in heightened acidity or unique, amplified sweetness.
When evaluating these coffees, it is helpful to consider how specific processing choices—such as anaerobic or honey methods—can alter the final cup profile. Enthusiasts often use the flavor wheel to categorize these complex sensory experiences, as experimental lots frequently exhibit characteristics that deviate from standard regional expectations. By presenting these four distinct profiles side-by-side, this project offers a rare opportunity to observe how controlled fermentation variables directly influence the final character of the coffee, providing a structured look at the intersection of modern technique and traditional origin.
In the Encyclopedia
Frequently asked questions
Where is James Hoffmann's The Fermentation Project | Quartet Box grown?
James Hoffmann's The Fermentation Project | Quartet Box, roasted by Glen Lyon Coffee, is sourced from Antigua, Guatemala.
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