
Originally Posted by
KimInGA
I roast my own coffee. Green beans are inexpensive and stay good for a very long time. I can't see how an oven would work well for roasting them though, because it is VERY important to keep the beans agitated and moving so they roast evenly. I would try the cast-iron skillet instead because you can stir it constantly.
Don't go by color when you're roasting. Go by sound. Stir the beans constantly until you hear a popping sound (like popcorn). This is first crack. It will go on for a minute or two, and when the popping slows it indicates that the beans have now reached the minimum level of roast. If you leave them going, it will be quiet for a bit (another 1-3 minutes typically) and then you'll hear more popping. It will be quieter though, like Rice Krispies. This is second crack. This is where seconds count. I usually let mine go for 5-10 seconds, enough time for second crack to really get rolling. This yields a beautiful darker roast, although still not to the level of Vienna. Just be careful because if you go 30 seconds longer than you meant to, you might end up with carbon and not coffee!!
One word of warning if you've never done this before. Roasting coffee makes a LOT of smoke. If you're using a cast-iron skillet that's totally open to the air, I would try no more than 1/4 lb at first. Personally I have a Behmor roaster that has smoke suppression and I still don't roast more than 1/2 lb indoors. Even that much (with the Behmor's filter) leaves a haze of smoke in my entire kitchen!