But what is espresso exactly. To put it in the simplest terms, espresso is coffee's more aggressive and strong willed little brother. Espresso is caffeine's answer to a shot of whisky. Just as addictive in some cases, but will not get you thrown in jail.
Espresso is made by filtering 1.5 to 2 ounces of water through tightly ground, espresso coffee, roughly the caffeine equivalent of four cups of coffee. If everything goes according to plan, what you get is 2 ounces of compressed caffeine with a small layer of foam on the top. The resulting concoction looks like a dark German beer with a head