Prosciutto is very salty, especially if you cook it. Adding salt is completely unnecessary. You can bake it for up to 20 minutes. Prosciutto comes out crispy. I used a skillet, but you may use a baking sheet lined with either non-stick aluminum foil or parchment paper. If the asparagus is thicker, you may use one for each prosciutto wrap so you will need less of them. I like using 3 thinner asparagus.