Gene Café CBR-301 Roast 50 | Colombia Supremo Reference Roast (TRT Method)

Описание: Gene Café CBR-301 Roast 50 | Colombia Supremo Reference Roast

Description

This video documents Roast 50 in the Coffee | One Roast at a Time project, a Colombia Supremo reference roast on the Gene Café CBR-301.

The goal of this roast wasn’t to chase numbers or optimise a profile. Instead, it was about observing how the machine behaves and establishing a stable reference roast that future experiments can be compared against.

This batch was roasted 250g in → 209.9g out and cooling was initiated at 13:21, producing a balanced medium roast.

Interestingly, first crack was not clearly detected, which occasionally happens on the Gene Café due to drum rotation and airflow. Instead of relying on crack, the roast was guided by colour, aroma, and overall roast progression, cues roasters have relied on long before digital logging existed.

Reference roasts are valuable because they create a baseline. Once you understand how a stable roast behaves, you can begin exploring changes in timing, airflow, or starting conditions with much greater confidence.

This roast becomes part of a growing dataset of logged roasts used to better understand Gene Café CBR-301 roast behaviour.

No hype.
No shortcuts.
Just learning, one roast at a time.

Chapters
00:00 Intro
00:14 Roast 50 – A Project Milestone
00:34 Coffee: Colombia Supremo
00:40 Batch Details (250g → 209.9g)
01:02 Why First Crack Wasn't Used
01:26 Guiding the Roast Without Crack
01:50 Roast Stopped at 13:21
02:10 Recognising Machine Rhythm
02:33 What Makes a Reference Roast
03:07 Cooling the Beans
03:29 Why Reference Roasts Matter
03:52 Learning From Each Roast

Equipment

Gene Café CBR-301 coffee roaster
Coffee Colombia Supremo
Batch 250g
Roast Time 13:21
Development Medium / balanced reference roast

About the Project

Coffee | One Roast at a Time is an experience-led exploration of home coffee roasting, documenting real roasts, observations, and lessons learned using the Gene Café CBR-301.

Subscribe for future roasts and experiments

Upcoming experiments will explore:

• Cold vs warm start behaviour
• Roast phase timing
• Development changes across similar coffees