Parmesan cheese is a food high in protein, calcium, and vitamin b12 making it one of the best choices for cheese around. Just be sure not to eat too much due to its high calorie and saturated fat content.
The ingredients in tradition Parmesan are:
milk
skim milk
rennet (culture agent to curdle the milk to cheese)
salt
and that is it.
Variants can include other enzymes and anti-caking agents in the shredded version to keep the cheese from clumping. These typically are calcium sulfate or potassium sulfate. Which add extra potassium and calcium. If possible try to located Parmesan cheese which is low in sodium (salt).
