Espresso around 70. A cup of drip around 100. You need like a fistful of ground to make a single shot of E but barely a spoonful for a cup of brew. Ya’ll?
In: Chemistry
As others have mentioned the main reason for drip coffee having more caffeine is the longer contact time with water.
However I need to mention that you are very wrong about the amount of coffee beans needed to brew a drip coffee. A spoonful per cup is enough only if you are brewing an instant. Instant coffee is not a finely ground coffee, it’s actually dehydrated coffee that has already been extracted.
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