While there are some meats you need to precook before adding to pizza, salami is not one of them. Meats like salami, pepperoni, prosciutto, and some Italian sausages are sold fully cooked. If you want to remove extra grease, microwave or lightly bake the salami before topping the pizza. However, this is surely not necessary and may cause the meat to be tougher than desired. Of course, if using raw steak, chicken, or pork, you should always precook. Never top a pizza with raw ingredients—They will not cook through when baking the pizza.