How to roast coffee yourself at home
In short: Heat a pan or drum roaster to 190-245°C, add 100-300 grams of unroasted coffee beans and stir for 12-18 minutes until they are evenly roasted. Then cool them down quickly in a colander. Light roast: 170-190°C, medium: 200-220°C, dark: 220-240°C.

Coffee lovers, listen up! We're going to explain how you can roast your own coffee beans right at home. You can probably brew a good, tasty cup of coffee by now. The next level is roasting your own beans: that way you influence every aspect of your fresh, home-brewed coffee.

In any case you'll need: unroasted coffee beans, a (wok) pan, a colander or bowl, a hob and a spatula. Note: it does take some practice to get to the perfect result.

Step-by-step: roasting coffee beans yourself

  1. Preheat a wok, pan or drum roaster to between 190 and 245 degrees.
  2. Put a colander in the fridge in advance so you can use it to cool the coffee beans.
  3. Add 100 to 300 grams of unroasted coffee beans to the preheated pan.
  4. Keep stirring the beans for 12 to 18 minutes so they roast evenly.
  5. Tip the beans into the chilled colander and keep stirring for another 3 to 5 minutes so they cool down quickly.
  6. Are the beans cool enough? Then you can grind them and brew coffee. Not sure about the right grind size? Read also how to set the right grind size.

Which pan temperature for which roast?

Before you start, decide which roast you want. The temperature of your pan determines the result:

Roast Pan temperature Signal
Light 170-190°C First crack of the bean
Medium 200-220°C A few minutes after the first crack
Dark 220-240°C Second crack of the bean

As soon as the core of the coffee bean reaches 180°C, the bean cracks for the first time, which is the point of a light roast. Keep roasting a little longer and you get a medium roast. After the second crack you have a dark roast. That's also the last moment to tip the beans into your colander, otherwise the coffee turns too bitter.

Once your pan is up to temperature, pour in a small amount of unroasted beans and keep stirring continuously for an even result.

Want to roast at home more professionally?

Want to go a step beyond roasting in a pan? Then you can choose a proper home coffee roaster. The most popular home roaster is the Gene Cafe: fully electric, with complete control over roasting time and temperature. Place it under the extractor hood or near a window because of the smoke that comes off during roasting.

Rather skip the roasting hassle?

Is roasting your own beans too much work, but do you still want to enjoy very fresh coffee beans? Then go for the fresh coffee beans from Café du Jour. The roast date is always printed on the packaging, so you know exactly how fresh your beans are.

Frequently asked questions about roasting coffee at home
How long does it take to roast coffee?
Count on 12 to 18 minutes of roasting time, plus 3 to 5 minutes of cooling.
Can I roast coffee without special equipment?
Yes, a wok or pan on the hob works fine. A coffee roaster like the Gene Cafe does give you more control over temperature and time.
How do I know which roast level I have?
Listen for the cracking sound: at the first crack you have a light roast, after the second crack a dark roast.
Can I brew home-roasted coffee straight away?
Preferably let roasted beans rest for 1 to 2 days (degassing) for the best flavour, although technically you can grind and brew them right away.
Where do I buy unroasted coffee beans?
At Café du Jour you'll find a range of unroasted coffee beans especially for home roasters.