The Roaster Warms Up for Harvest
Before the new crop reaches the drum, the roaster has to be checked, cleaned, and warmed. It is a ritual with practical reasons.
A roaster that has sat idle is like an engine on a cold morning. It needs a gentle start.
Summary
- Before harvest, we clean and inspect the roaster, check the airflow, and run test batches.
- Because we roast most of our own coffee, the roaster is central to the farm's operation.
- The first roasts of the season are cautious and focused on learning how the new crop behaves.
Key takeaways
- Maintenance prevents problems.
- New crop behaves differently from old.
- Roasting well starts with preparation.
We roast most of our own coffee. That makes the roaster one of the most important machines on the farm, and it deserves a careful start to the season. See Why We Roast Most of Our Own Coffee.
The cleaning
During a roast, oils, chaff, and dust collect in the drum, the ducts, and the cooling tray. Over time they build up. Before the season, everything is cleaned thoroughly. A dirty roaster can produce off flavors and, more seriously, can be a fire risk.
The inspection
We check the moving parts: the drum rotation, the fans, the burners, the seals. We make sure the gauges read properly and the controls respond. Anything worn gets replaced before it fails.
The airflow
Airflow shapes how heat moves through the beans. We check that the exhaust is clear and the dampers work. A blocked exhaust changes the roast and is unsafe.
Warming up
A cold machine takes time to reach a stable temperature. We run it empty at first, to let the metal heat evenly. Starting a batch before the machine is stable leads to inconsistent results.
Test batches
When everything checks out, we roast small test batches. Often these use coffee from the previous crop or early lots from the new one. The point is to see how the machine behaves and to refresh the team's feel for it.
Why new crop is different
Fresh green coffee has higher moisture and behaves differently from older stock. A profile that worked in the middle of last season may need adjusting. We taste and adjust, step by step. See A Day in the Roastery.
The people
Roasting is a craft of attention. The person at the drum watches temperature, color, smell, and sound. Training and practice matter. We spend time with the team before the pressure builds.
Looking ahead
As the harvest grows, the roaster will run more. Our laboratory plans also depend on a reliable roaster, since test batches for flavor work begin with good roasts. See The Laboratory We Are Building on the Finca.
Common questions
Why clean the roaster before the season?
Buildup affects flavor and creates safety risks. A clean machine performs more consistently.
Do you roast all your coffee?
We roast most of the coffee we produce.
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