Prosciutto Crudo and prosciutto Cotto are pretty similar, but there is a difference between the two.  The most significant difference is the cooking method. Prosciutto Crudo (or "uncooked") is made from raw meat that has been cured and aged, which gives it its distinctive flavor and deep red color.  Prosciutto Cotto (or "cooked") is made from cooked meat, which gives it a milder flavor and pink color. Both types of Prosciutto can be eaten either cold or warm. Still, most people prefer Prosciutto Crudo cold and Prosciutto Cotto warm.  Prosciutto Cotto is also a bit cheaper than prosciutto Crudo, so it's a good option if you're on a budget.