How To Roast Your Own Green Coffee Beans In A Conventional Home Oven

About Coffee[s] Staff

To roast your own green coffee beans, a preheated ceramic plate works best, however, any pan with sides can be used, such as a cookie sheet, pie plate or pizza pan.

Preheat oven and cooking sheet to 450°F (230°C).
Spread an even layer of green coffee beans onto cooking surface. Make a hole in center to allow for more even roasting.
Roast on the middle rack for approximately 6-10 minutes, or until beans begin to crackle and pop. Remove beans from oven and stir with a wooden spoon. Quickly place back in oven.
Roast for an additional 2-6 minutes. During this period it is critical to watch the beans as they turn colour quickly from light to dark. Watch the beans closely to determine your preferred roast colour and stir if necessary to create an even roast. (Tip: Roasting should take no longer than 15 minutes. If it does, increase oven temperature by 25°F (14°C).
Remove cooking sheet from oven when beans have reached desired roast colour. Transfer to a heat resistant bowl for cooling.
Enjoy immediately. Use within five days of roasting. Grind just before brewing.

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Some tips for achieving the ultimate roast:

Green coffee beans have a long shelf life (2 to 10 years). Keep dry and store away from direct sunlight (like grains, sugar, etc.).
Maximum flavour is achieved with a medium roast.
A dark roast increases body and decreases both acidity and caffeine. A light roast has less body, but higher acidity and caffeine. Coffee tastes flat without some acidity.
Roasted coffee is perishable. Consume fresh roasted coffee within 5 days after roasting. Store in any vessel – glass jar, stainless steel bowl, etc. Do not store in the fridge.

Always remember, practice makes perfect. Over roasting and under roasting the green beans are common to those who are becoming master roasters.

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