The main difference between these drinks is in the ratio of espresso to milk. A café con leche packs the most punch with equal parts espresso and milk. A cappuccino, on the other hand, is made with a 1:2 espresso to milk ratio, and a latte gets its flavor with one part espresso and three parts milk. Another important difference is that café con leche is made with steamed milk; lattes and cappuccinos use foamed milk, requiring either a frother or a skilled hand with a whisk. So, in addition to the added caffeine boost, a café con leche is a much easier treat to prepare at home.