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What type of coffee has the most caffeine?

When you have a lighter roast coffee, more of the caffeine that was originally in the coffee stays in there. Speciality coffees measure the amount of coffee used for brewing in weight units, and a dark roast’s density can be substantially lower than a light roast’s.

So if you’re measuring out 20 grams of coffee for both a light and dark roast, the darker one will actually have more beans because it takes up less space.

Now, even though each bean might have slightly less caffeine in a dark roast, you’ll need more beans to get the same amount of coffee as in a light roast. That means the difference in caffeine between light and dark roasts is pretty minimal. The most important factors that affect the amount of caffeine are actually the type of coffee being roasted and where they were grown – like their altitude.

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