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Fermentation Project with James Hoffmann / Tasting Kit

Roasted by Rosso Coffee Roasters

This guided tasting kit explores how different fermentation methods transform the flavor, aroma, body, and acidity of coffee.

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Fermentation Project with James Hoffmann / Tasting Kit — Rosso Coffee Roasters
Image: courtesy of Rosso Coffee Roasters

From the roaster

James' Live Tasting will be on Oct. 3 3PM BST

The live stream will be on his youtube channel (https://www.youtube.com/@jameshoffmann)

This guided tasting experience offers a rare opportunity to explore fermentation in isolation. Four coffees from a single harvest at one farm in Guatemala have each been processed using a different fermentation method. With every other variable held constant, each cup reveals how fermentation alone can transform flavour, aroma, body, and acidity.

To expand the experience, we've paired the collection with two coffees from Diego Bermúdez's El Paraíso in Colombia. Renowned for pushing the boundaries of coffee processing, these coffees showcase how innovative fermentation techniques can unlock entirely new expressions of flavour, offering a glimpse into what's possible when tradition meets experimentation.

6 fermentation methods — 60g each

  • Mechanically Demucilaged

  • Wild Fermentation

  • Lactobacillus Fermentation

  • Saccharomyces Yeast Fermentation

  • Thermal Shock Red Plum

  • Lychee Peach Sugar Cane Decaf

James' Live Tasting will be on Oct. 3 3PM BST

The live stream will be on his youtube channel (https://www.youtube.com/@jameshoffmann)

— Rosso Coffee Roasters

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Last verified: October 14, 2026 · Browse all beans.