Iteration.Coffee Cultivar Project: Field Notes By Rob Hoos

The Iteration.Coffee Cultivar Project: Field Notes is the raw, unfiltered foundation of Cultivar: A Practical Guide for Coffee Roasters. This collection of research roasts, data, and field notes documents my 606-day journey of experimentation—conducting 309 roasts across 31 coffees from 6 farms in 4 different coffee-producing countries. Originally shared through Iteration.Coffee boxed sets, this book captures every success, misstep, and breakthrough along the way. From baseline roasts to optimized profiles, The Iteration.Coffee Cultivar Project: Field Notes offers a deep dive into the roasting process, exploring how different cultivars react to heat and develop their unique flavor characteristics. If Cultivar is the refined guide to applying these insights, this book is the laboratory notebook—the full record of the work that led to it. For coffee roasters who want to see behind the curtain of experimentation, this is the resource that lays it all out, one roast at a time.