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Which Coffee Packs the Biggest (Caffeine) Punch?

Did you know that a cup of drip coffee packs way more caffeine than that espresso you’re sipping? Or that lightly roasted beans tend to pack a bigger punch than dark-roasted ones? Or that the ideal temperature for brewing coffee in order to extract more caffeine is between 195 and 205 degrees? 

Well, now you do, and this smart Business Insider video will school you on all the other ways to eke out more of a jolt from every sip.