Select your beans
Choose a green coffee bean depending on your personal preference, such as Kenyan, Ethiopian or Jamaican. Try a coffee bean sampler if you don’t have a favorite type.
To oven-roast your green coffee beans, you will need a perforated metal baking sheet, a spatula and a metal colander. Preheat the oven to 450 degrees F. Pour the green coffee beans onto the baking sheet in a single layer and place in oven.
Roast to perfection
After a few minutes in the oven, the beans will start to pop or crack. Once the popping starts, the beans will start to darken quickly. Move them around on the sheet with the spatula every few minutes to ensure a more even roast. It will take 10 to 15 minutes to achieve the desired color. Once the beans are roasted, remove them from the oven and pour them into the colander.
The beans will continue roasting as they cool, so moving them around in the colander can help speed up the process. Do not cool them in the refrigerator, as this will build moisture. Once cool, store in a tightly sealed jar.
Wait, then brew
Letting the roasted beans rest for 24 hours ensures optimal flavor. After that, you’re ready to grind your freshly roasted coffee beans to make a perfect cup!