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Roasting coffee - made easyAuthor: Ingo from Roast Rebels
We at Roast Rebels have dedicated ourselves to a single theme: Simply roasting your own coffee. On the one hand, we offer the most proven small coffee roasting machines as well as high-quality green coffees, on the other hand, we want to support people who roast their own coffee with tips, knowledge, roasting profiles and tutorials to quickly achieve good roasting results. You can therefore find a lot of information and roasting profiles on our website, here in the podcast or also on our YouTube channel. Visit us for more on Coffee Roasting: https://roastrebels.com/en Language: en Contact email: Get it Feed URL: Get it iTunes ID: Get it |
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Rob Hoos: How Cultivars & Airflow Change Your Coffee Roasting (Interview)
Thursday, 12 February, 2026
Rob Hoos is back! Three years after our first viral interview (50k+ views), we dive deep into his latest research on airflow, cultivars, and roasting physics. 👉 Rob's new book "Cultivar": https://roastrebels.com/en/cultivar-a-practical-guide-for-coffee-roasters/In this exclusive deep dive, Ingo talks to world-renowned roasting consultant and author Rob Hoos. Rob shares his most significant breakthroughs from the last three years of research and consulting.We’re breaking down the myths: Why is the genetic variety (cultivar) often more important than terroir? How does airflow impact the actual weight loss curve and flavor development? And how do you roast a Maragogype to bring out those elusive tropical fruit notes?Whether you are a home roaster or running a commercial roastery, this interview will fundamentally change how you approach your roast profiles.00:00 – Welcome back, Rob Hoos: A 3-year followup 00:32 – Who is Rob Hoos? Consulting, Books & SCA 01:43 – The biggest learnings from the last 3 years 02:15 – Focus on Cultivars: Beyond field blends 03:54 – Airflow Revolution: Impact on flavor & weight loss 05:45 – Convection vs. Conduction in drum roasting 07:22 – Why the deep dive into Coffee Cultivars? 09:50 – Terroir vs. Genetics: How understanding has shifted 11:43 – The Maragogype Revelation: Tropical fruit from PNG 16:20 – The "Cultivar Project": 8 years of research 19:35 – Coffee Science: The evolution since the 2000s 22:20 – Altitude & Terroir: Correlation vs. Causation 24:44 – The Galapagos Case: High density at low altitude 30:08 – Genetic Purity: Cross-pollination and seed banks 33:55 – The mystery of "SL-R": A hidden Castillo story 37:40 – The 4 Genetic Groups: Typica, Bourbon, Ethiopia, Hybrid 40:40 – Roasting Strategy: Why "Fast" isn’t always best 46:15 – Moisture & Density: Applying heat energy correctly 51:40 – Why wet coffee can "run away" from you 54:20 – The "Perfect Recipe": Roasting for maximum fruitiness 57:34 – Rob Hoos’ Online Community & Mentorship 59:30 – Conclusion: Final thoughts on the coffee industry► Find Rob Hoos’ new book "Cultivar" here: https://roastrebels.com/en/cultivar-a-practical-guide-for-coffee-roasters/► Visit Rob Hoos online: https://www.hoos.coffee ► Follow Rob on Instagram: https://www.instagram.com/robhoos/► Join the Roast Rebels Movement: https://roastrebels.com▬ About this channel ▬▬▬▬▬▬▬▬▬▬▬▬At Roast Rebels, our mission is to make coffee roasting easy. On the one hand we offer the most proven small scale roasting machines and high quality green coffees, on the other hand we want to support people who roast coffee with tips, knowledge, roasting profiles and tutorials to achieve good roasting results quickly. You'll find lots of information and roasting profiles on our website, as well as here on the YouTube channel. #homeroasting #coffeeroasting▬ More Information ▬▬▬▬▬▬▬▬▬▬▬▬You will find a lot more information as well on our website: https://roastrebels.com/en▬ Social Media ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬►Facebook: https://www.facebook.com/roastrebels/►Instagram: https://www.instagram.com/roastrebels/►Newsletter: https://eepurl.com/dxHgML►Podcast (Roasting coffee - made easy): https://anchor.fm/roasting-coffee►Onlineshop for European coffee roasters: https://roastrebels.com/en/►Onlineshop for coffee roasters in Switzerland: https://roastrebels.com/ch/en/#CoffeeRoasting #RobHoos #RoastRebels #SpecialtyCoffee #RoastProfile #CoffeeScience #Cultivars #HomeRoasting
