How much caffeine is in a single coffee bean?
by 
The Curious Bag
ANSWERS: 1
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The caffeine content in varietal or "straight" coffee beans ranges from 1.01 percent for Mocha Mattari beans to 1.42 percent for Tanzania Peaberry. For dark roasts and blends, the range is 1.17 percent for Mocha-Java beans to 1.37 percent for Columbia Supremo Dark.
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