Pasta Filata is an Italian, pasta filata means “spun paste,”. These characteristically stringy, stretchy quality undergo a unique stretching process . . Stretching aligns the protein structure into strands, more or less.
The cheese-making process for pasta filata–type cheeses begins with the customary steps: When the curd is placed in hot water, the structure softens.
The milk is curdled, the curds are cut into pieces, and the whey is drained off.
This softened, pliable curd is then stretched. This aligned protein (casein) strands are nested together with pockets of fat and serum (whey/water) in between.
The pasta filata process usually better stretching characteristics yields a cheese that has, perfect for pizza!