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I Thought I Heard First Crack… Then I Waited Ethiopian Guji Natural (Gene Cafe CBR-301)
This video looks at I Thought I Heard First Crack… Then I Waited Ethiopian Guji Natural (Gene Cafe CBR-301). uh natural process Ethiopian uh from a…
When Should You Stop a Coffee Roast (Without Trusting First Crack)
This video looks at When Should You Stop a Coffee Roast (Without Trusting First Crack). Hi, Warren here and you're very welcome back to my I…
I Can’t Hear First Crack So How Am I Supposed to Stop the Roast
This video looks at I Can't Hear First Crack So How Am I Supposed to Stop the Roast. For a long time, I thought first crack…
Crack Monitoring on the Gene Café CBR-301: A Small Progress Update
A cautious update on my ongoing experiment to use audio, roast data, and manual notes to better understand first crack on the Gene Café CBR-301. It…
Roast 103: First Swiss Water Decaf on the Restored Heater
REDBER SWP Decaf Personal Gene Café CBR-301 | Restored-heater phase | Personality 3 This roast was the first decaf I have roasted on the restored-heater version…
Roast 24 – Brazil Santos Natural – Wanted Controlled post-crack development extension
Brazil Santos Natural – WantedIn: 250g → Out: 211.3g (15.5% WL)Intent: Controlled post-crack development extension Measured Data Batch size: 250g Target temperature: 250°C Weight loss: 15.5%…
One Month with the Kaleido M2-C: Twenty Roasts Later
A month and twenty roasts with the Kaleido M2-C, from early Artisan adventures to more consistent, drinkable coffee.
Closing the Gene Cafe Chapter
After 215 roasts, heater replacements and a lot of added instrumentation, I am closing the Gene Cafe roasting chapter and carrying the lessons into the Kaleido…
Coffee Roasting Thermodynamics – A Beginner’s Attempt to Understand What Is Actually Happening
Coffee roasting thermodynamics: a beginner’s attempt to understand heat While researching the move from my Gene Café CBR-301 to the Kaleido M2, I kept coming across…
Gene Café CBR-301 Data Logging with Raspberry Pi, Bluetooth and Power Monitoring
Gene Café CBR-301 technical reference A practical, read-only data-logging build for the Gene Café CBR-301 This page documents how I placed a Raspberry Pi beside the…
Kaleido M2
ROASTING / THE NEXT CHAPTER Moving from the Gene Café to the Kaleido M2 The next chapter is now tangible: factory photographs and paperwork identify the…
RoastAid: From Raspberry Pi Recorder to Roast Companion
RoastAid did not start as something I intended to use while roasting. In fact, it really started somewhere else entirely. Before RoastAid there was RoastSignal: a…
A few places to start
First crack · Cold and warm starts · Water · Coffee pricing · All articles
For a roast record, try its number, coffee name, origin or process. For orientation, visit Start Here. The Roasting path follows Beginner → Intermediate → Advanced; Understanding Coffee lets you explore subjects in any order.