Sometimes animal

Animal rennet

Common US / international name: rennet

Origin: Enzyme mix that coagulates milk for cheese.
What it depends on: Traditional rennet comes from calf stomach. Many cheeses now use microbial or fermentation-produced chymosin. Labels may say vegetable rennet or microbial enzymes.
Where it typically appears: Cheese, processed cheese, some dairy desserts.
Product groups: Dairy
Source: Open Food Facts ingredients taxonomy (ODbL); food chemistry references. As of September 1, 2026