As the title suggests, vegetarian cheese.
Most cheese is made by mixing milk with rennet. Those are enzyms habiting in a cow's stomach, even more in calves. Vegetarian cheese replaces that with a chemical or yeast.
In order for a cow to produce milk it should have calved recently, or given birth as we call it with humans. Only 30% of those calves are used to become a new generation of milking cows. The rest will end up in the slaughterhouse where they will also be used for the rennet which resides in their stomachs.
Long story short: eat cheese and enjoy some veal from time to time like a normal human being. Or go full vegan and don't even touch cheese. But vegetarian cheese is for hypocrites.