Coffee: caffeine content, light roast vs dark
Tutoring, I consume a cup of coffee every hour. The tutor shares a fact about caffeine content vs roast.
About twenty five years ago I was told that roasting coffee beans destroys caffeine. Therefore, the logic continued, the darker the roast, the less caffeine would remain. Hence, a cup of dark roast is less caffeinated than a cup of light.
The person who told me that seemed knowledgeable, so I believed them. However, I’ve read today that, in fact, caffeine content is changed little by roast, because at the temperature coffee is roasted, caffeine is durable.
Source:
Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.
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