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A: What in the world is that smell?
B: The aroma of roasting coffee beans.
A: Smells like you're baking something. What are those?
B: Green beans. They pop and turn brown when you roast them.
A: Cool! But isn't that a hot air popcorn popper?
B: This machine roasts the beans just right. If you roast them too long, or the temperature is too hot...
A: The beans will burn. I know. I've tasted burnt coffee before...yuck!
