coffee society journal — roasting
The size of the roasting machine changes what ends up in your cup. Industrial machines roast hundreds of kilos at once and are built to hit the same result every time, which usually means darker, faster roasts. We roast a few kilos or less at a time — we rent several machines of varying sizes depending on what the coffee needs — so I can give each lot its own roast and keep adjusting it week to week. Neither approach is wrong. They are built for different jobs.
01what a roaster actually does
A roaster is really just a machine that moves heat into green beans, usually in a slowly turning drum. The craft is in the curve: how fast the heat rises, when the beans crack, and how long the flavors develop after that. I have taken the same Ethiopian floral and tea-like one week and heavy and cocoa the next, just by changing that curve.
02what batch size changes
To be fair, industrial roasting is impressive engineering, and if you need a consistent dark blend at national scale it wins on cost every time. What it can't do is take one exceptional 60-pound lot of Pink Bourbon and treat it like an individual: roast it its own way, taste it, tweak it, and get it to you within days. A big machine just isn't built for that.
03why we roast the way we do
- Small seasonal lots — 50–100 lbs per variety per quarter, each with its own roast profile matched to fruity & juicy or chocolatey & nutty.
- Roasted to order — your bag is roasted after you order it and ships within 24 hours, roast date printed on.
- Cupped continuously — every lot is Q graded 85+ going in, and we taste our own roasts against that standard coming out.
04common questions
Better at flavor and freshness, not at price or consistency. If you want the exact same cup every day for a decade, industrial does that well. If you want to taste what one farm's harvest did this year, small batch is the only way to get there.
Batch size, days from roast to delivery, whether profiles are per-lot or one-size, and whether you can cup together. The answers tell you if you're buying a partner or a warehouse.
No — it describes equipment, not skill. Pair it with a Q grade, a roast date, and a named farm and it starts meaning something.
taste the difference a small drum makes
Every Coffee Society lot gets its own profile, roasted to order in Berkeley, CA and shipped within 24 hours. Cafes: we're the roasting program you don't have to build.
coffee subscriptions rotating single-origin partner with uscoffee society · specialty micro roaster · berkeley, ca · est. 2023