I was reading a blog post on coffee last year about doing this on the grill some the comments mentioned people using a popcorn machine, and found one at Goodwill for about 7 dollars. (Actually the long story was I saw one for 7 dollars at Goodwill a year ago and thought it was too expensive then regretted and asked family members to keep an eye out and they found one for me six months later. Missed opportunity of roasting!)
Simple enough to do and I will keep at it. You can find the green beans from a number of suppliers, I got mine from amazon.
I recommend doing this outside until you get the hang of it. Burning beans can be a nasty smell.
First I started the popper to heat up, takes about a minute Then, I dumped about 3/4 cup of the green beans into the popper, I used a wooden spoon to move the around a bit too.
After about four minutes they are starting to change color. Then they start to crack making a popping sound, this first tell they are almost done. A few pop then the rest join in.
After about eight minutes you can see they are nearly done. You get a second less clearer popping sound, I then keep it going for 45 seconds more. These were a bit less roasted then others I have seen. Then I dumped them on a baking sheet. You will see a bunch of the chaff, it is very light simply blowing on the beans will send them on the way.
You need to let the beans rest. Some say a day, some say 30 minutes, some 12 hours. I did about four hours, ground them and got them ready for french press brew.
Six minutes later......
Very happy with the first batch.
