Every time I have had a really good pizza (usually in Italy for some reason) there's one thing that stand out more than anything else and that's the crust. What I have noticed about those really good pizzas is that the crust have a very rough texture, almost like sand paper. I have tried to find a picture of this but it's hard to find any. This was the best I could find now:
You see all those white spots? (They are all over the pizza, not only on the bottom like in this picture) What are they and why do only a few pizzas have them? Is it a special kind of flour in the dough? Is it some other secret ingredient? Every time I see a pizza with this texture I know it will be a good one. Note: It's not just dusted with flour. It seem to be embedded and part of the dough.