Cheese is a dairy product that has been part of the human diet for thousands of years. Its diversity is astonishing, with over 1,800 varieties worldwide. Each type of cheese has its own flavor, ...

We've seen cheesesteaks with all sorts of cheese varieties, from provolone to cheddar to mozzarella. So Mashed consulted with Philly native Carolyn Wyman, author of "The Great Philly Cheesesteak ...