I get a few pieces of popcorn most nights when roasting. It's in one of the 4 Colombians we have. I even see the yellow pieces in the raw coffee and delight in letting them go through the roaster. Half the time, it's fully "popped" and is easily seen and grabbed in the cooling tray - light colored against the brown background. Very enjoyable to munch on at night let me tell you. Some of the time, the corn has not popped, or it's in various stages of being roasted........so I still try to munch on it. Worst is when you then get these undeveloped pieces of corn caught in your teeth and you then crave a toothpick or dental floss but you can't stop.......and subsequently suffer. Alas.......I never seem to learn ..........just leave it alone or throw it in the bin.....nope, I can't help myself.