What cheese is traditionally put onto pizza Margherita?

Mozzarella

Under the mistletoe, it's traditional to do what? Who fled from King Saul to Philistine territory, feigning madness? What Marvel character can shrink to microscopic size using Pym Particles other than Ant-Man? In the animated film "An All Dogs Christmas Carol," who's portrayed as Scrooge? Whose donkey saw an angel with a drawn sword?