This is a recipe that combines three favourite things. Pizza. Speck (or prosciutto if you can’t find it). And mascarpone. But not just any mascarpone — homemade mascarpone. Because homemade is so incredibly easy, you’ll wonder why you never tried it before, and because it’s so fresh, you’ll find it hard to go back to store-bought. Although often thought of as a sort of soft cream cheese, mascarpone is technically not a cheese at all but a dairy product made from cream coagulated with acetic or citric acid (or, for the home cook, lemon juice).