A Beginner's Guide to Home Coffee Roasting

The oldest method, and the one that requires the least equipment. A heavy cast iron pan or skillet, a stovetop, and your full attention are all you need.

You preheat the pan on medium-high heat, add a single layer of green beans, and keep them moving - stirring or shaking continuously - so they don't scorch on one side. You're listening for first crack, an audible popping sound that tells you the bean has developed enough to be drinkable. That typically arrives around 5 to 7 minutes in, with a total roast time of around 10 to 15 minutes depending on how dark you want to go.

The results are honest and hands-on. You won't get the consistency of a dedicated machine, and it takes practice to get an even roast across the batch. But you'll learn a lot about how beans respond to heat quickly, and there's something satisfying about roasting coffee with nothing more than a pan and a wooden spoon.

One practical note: roasting produces smoke, and the darker you go, the more of it. Good ventilation - extractor fan on, window open - is worth planning for before you start.

Drum roasters use a rotating drum to tumble the beans through heat. The process is slower than fluid bed roasting, with a typical home drum roast runs around 10 to 15 minutes, with first crack arriving roughly two-thirds of the way through, followed by a development period where you decide how far to take it.

That slower development allows sugars to caramelise more fully, which tends to produce a rounder, fuller cup with more body and developed sweetness. If espresso is your primary brew method, drum roasting is worth paying close attention to - that body holds up well under pressure and works nicely with milk.

Home drum roasters vary significantly in price and complexity. At the more accessible end, machines like the Hottop are reliable workhorses with solid build quality, available in a few different models to suit different batch sizes and how much involvement you want in the process. At the more hands-on end, Kaleido makes a range of drum roasters with detailed control over temperature curves, airflow, and drum speed - popular with enthusiasts who want to build and refine their own roast profiles.

Most drum roasters in this category connect to Artisan, a free and widely used roasting software that lets you log temperature curves, track development time, and repeat profiles consistently batch to batch.

For those who want to push further, the Aillio Bullet sits at the top end of the home drum roaster market - an all-electric infrared drum roaster with a 1.2 kg capacity and full software integration. It bridges the gap between serious home roasting and small commercial use.

Best for: espresso drinkers, and anyone who wants to develop roasts with body, sweetness, and depth.

Whatever method you use, the green bean underneath it matters. Origin, altitude, process, variety - these are the variables that determine what's possible in the cup. The roasting unlocks the potential that's already there. Your job is to choose when.

At 100 Green Beans, we source specialty-grade green beans, single origin, and give you the information that actually helps - the region, the process, the flavour potential - so you know exactly what you're working with before the heat goes on.

The roasting is yours. We just make sure the beans are worth the effort.