Financing guides assume a local dealer and a local leasing company. Buying a roaster from a factory abroad — 50% deposit, balance before shipment, EXW terms — changes how a loan, a lease or a letter of credit fits. The four routes, what each needs from the supplier, and the cash rule that matters more than the rate.
Apprenticeships take a year; a production roastery needs an operator who can run the machine safely and release batches in weeks. A six-week plan with weekly goals and pass criteria, the order to teach coffees in, and how the roaster’s control level changes how long it takes.
A roaster’s curve log and a roastery’s batch record are different documents. The twelve fields a batch card needs — batch number, green lot, weights, milestones, adjustments, colour, release — how to number batches for traceability, and how the card doubles as the release decision.
Three measurements on every green coffee delivery — moisture content, bulk density and water activity — with accept-and-reject thresholds, what each result changes on the roaster (batch size, charge, airflow), and why tropical roasteries re-test monthly.
Roasted coffee releases about 40% of its carbon dioxide in the first day and keeps going for weeks. Whether to bag immediately in valve bags or rest first, how long each roast and product needs before delivery, what it costs in stock, and how packaging carries the rest of the job.
A roast colour meter turns ‘looks about right’ into a number. How the Agtron scale works, whole-bean versus ground readings and what the difference tells you, a batch-release procedure with tolerances, and how colour, curve and cupping work together in a production roastery.
Cold brew is now a wholesale line, not a summer special. What roast level and profile suit cold extraction, why the grind is a capacity question, how resting and packaging differ, and what a roastery needs to supply cafés and ready-to-drink producers reliably.
Whether to blend green coffee before roasting or roast each component separately is usually argued on flavour. For a roastery it is also batches per week, stock lines, a mixing step and the smallest batch your roaster can run well. Both methods, the numbers, and how to decide.
Robusta behaves differently from arabica in a drum roaster — a rigid cell structure, a quiet first crack, a longer and hotter roast — and it changes the production line too: separate profiles, more smoke, a lower batch size by volume. What to test first and how to run both on one machine.
When a roaster’s bean probe reads wrong, the cause is usually wiring or settings, then fouling or position, and only last the sensor itself. How to check each in order, calibrate with ice and boiling water, and what to do when you finally replace a thermocouple.
