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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…
Four Roasts on the Restored Heater: What I Think the Gene Café CBR-301 Is Doing Now
After the correct replacement heater was installed in my Gene Café CBR-301, I did not want to assume the machine had simply gone “back to normal.”…
Gene Café CBR-301, What to Know Before You Buy
Gene Café CBR-301: what to know before you buy A practical owner’s view after 100 roasts, one repair, and a lot of recalibration.I have spent a…
Roasts 95–97 – Three Honduras Field Notes and a Quiet 100th Roast Event
Last roasts of the day This was meant to be a tidy little roast session. Two roasts of the same Honduras Catuai Natural. One cold start.…
Gene Café CBR-301 Start Here
New to my Gene Café CBR-301 videos? Start here. If you have found my Gene Café CBR-301 videos and are not sure where to begin, this…
Roast 93 and 94 – End-of-Bag Personal Roasts
Ethiopia Karume Natural (247.4g) and REDBER Decaf Colombia Swiss Water (257.5g) These were two end-of-bag personal roasts done to finish what was left in each bag.…
Roasts 84 to 91 – Stabilising the Current Heater, Not Pretending It Is Normal
Roasts 84 to 91 ended up being a very important block. Not because every roast was perfect.And not because this suddenly turned the Gene Café CBR-301…
Roast 80–83 – Control Inputs vs Outcome (Honduras, Washed)
Context These four roasts were part of a focused attempt to understand what the controls on the Gene Café CBR-301 actually do in practice. The goal…
Post-Heater Recalibration, What Actually Changed
Introduction This note captures what changed after replacing the heater in the Gene Café CBR-301, and how the system was recalibrated using real roasts. It is…
Roast 70–75, The Repaired Gene Café Has a Different Fingerprint
The last six roasts have made one thing much clearer. The repaired Gene Café CBR-301 does not appear to be a simple version of the old…
Roast 74 and 75, Honduras Calibration Pair After Repair
The purpose of this pair was simple: stop drifting beyond target and generate a cleaner post-repair comparison. Roasts 72 and 73 were useful, but they were…
Post-Repair Recalibration, Where Things Stand After Four Roasts
When the heater was replaced, the obvious question was whether the machine would behave the same as before. The answer, after four post-repair calibration roasts, is…
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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.