The Fermentation Project Bundle — SOLO Brewing × James Hoffmann | Limited Edition

🔴 STRICTLY LIMITED — ONLY 60 BUNDLES AVAILABLE WORLDWIDE 🔴

Once they're gone, they're gone. No restock. No second run.

At SOLO Brewing, fermentation has never been a trend — it's been an obsession since day one. From our Lisbon roastery, we've spent years chasing the coffees that push boundaries, carry a producer's fingerprint, and taste like nothing else in the cup. So when James Hoffmann — one of the most respected voices in specialty coffee — launched The Fermentation Project and invited roasters who share this passion to participate, we didn't hesitate for a second.

The Fermentation Project Bundle is our answer to that invitation. It brings together four of our most extraordinary fermented releases — each one a chapter in the story of what fermentation can do to coffee — into a single, collectible bundle designed for those who want to go deeper.

📦 Ships mid-September 2026 · 🌍 Global cupping event: 3rd October 2026

🧪 THE FERMENTATION PROJECT KIT — 4 × 100g Collector's Cans

James Hoffmann's global initiative, roasted by SOLO Brewing

Four coffees. Four distinct points on the fermentation spectrum. One global cupping event on 3rd October 2026.

This kit was sourced and curated by James Hoffmann himself — from a classic washed baseline to wild yeast, controlled yeast, and lactobacillus fermentation at its most extreme. Tasted side by side, these four coffees answer a single question: what does fermentation actually do to coffee?

All four lots are sourced directly through The Fermentation Project, roasted to order and shipped from mid-September 2026 — timed to arrive perfectly rested for the global cupping event.

🍒 CHERRY BOMB — Co-fermented Natural | Colombia

El Vergel Estate, Tolima · Castillo & Colombia varietals

Some coffees arrive with a story. Cherry Bomb arrives with an explosion.

Born at El Vergel Estate in Tolima, Colombia, this co-fermented natural is the result of years of innovation and an obsession with pushing the limits of what coffee can taste like. Sourced from 250 coffee-growing families across Tolima, Huila, and Caldas, the cherries undergo 48 hours of anaerobic pre-fermentation before entering a five-day co-fermentation with red cherry and sugarcane — a process designed to amplify depth, sweetness, and complexity in ways that are impossible to forget.

Sensory notes: Cherry · Chocolate · Ginja · Spices

🍺 HOP HOUR — Anaerobic Co-fermented with IPA Yeast | Brazil

Fazenda Paraíso, Carmo do Paranaíba · Catuaí Amarelo

A coffee crafted for those who crave innovation.

Produced by Danilo Barbosa at Fazenda Paraíso in Minas Gerais and certified by Rainforest Alliance, this microlot undergoes 36 hours of controlled anaerobic co-fermentation with IPA beer yeast — a technique borrowed from craft brewing that intensifies tropical fruit aromas and adds a vibrant, hop-like citrus character that sets this lot apart from anything else in the cup.

Sensory notes: Passion Fruit · Ripe Peach · Citrus Hops · Resinous Finish

🔬 METACAFEÍNA — Castillo 720 | Colombia

Finca El Paraíso, Cauca · Diego Bermudez

An experimental, explosive, and unforgettable coffee.

Grown by the legendary Diego Bermudez at Finca El Paraíso in Cauca, Colombia, at 1,960 metres above sea level, Metacafeína is fermented for 720 hours with lactobacillus and finished with thermal shock — a process that transforms the coffee's acidity, texture, and depth in ways that challenge every expectation of what coffee can be. Used by Carlos Escobar, multiple-time titleholder at the Brewers World Championships, this is a rare microlot for the truly curious.

Sensory notes: Crushed Pink Peppercorn · Port Wine · Mint Candy

What's in the bundle

• 🧪 The Fermentation Project Kit — 4 × 100g collector's cans (James Hoffmann × SOLO Brewing)
• 🍒 Cherry Bomb — Co-fermented Natural, 200g collector's can
• 🍺 Hop Hour — IPA Yeast Co-fermented, 200g collector's can
• 🔬 Metacafeína Castillo 720 — 100g collector's tin

All coffees are whole bean, roasted to order. Designed for filter brewing: V60, Aeropress, Chemex, batch brew.

📦 Ships mid-September 2026 — perfectly timed for the global cupping event on 3rd October 2026.

⚠️ Only 60 bundles exist. This is the most complete expression of SOLO Brewing's fermentation obsession — and it will not come back.