How Come An Espresso Shot Has Less Caffeine Than Your Regular Cup Of (Drip) Joe?

Question

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

Answer 1

Because a shot is smaller than a cup. 

It is the difference between concentration and volume.