Not starting a holy war (and endless discussions about the nature of pizza and whether the Truth is in Rome, Naples, or New York), but it is quite common to put

Not starting a holy war (and endless discussions about the nature of pizza and whether the Truth is in Rome, Naples, or New York), but it is quite common to put some oil in the dough. It makes it easier to work with, more homogeneous, lighter (but thicker), and it cooks a bit different.