Is Cheese Vegan

Cheese fails the vegan test on milk alone, which makes the headline answer straightforward. The more interesting question sits one level down and matters to vegetarians: how the milk was curdled.

Traditional cheesemaking sets milk with rennet, an enzyme complex taken from the stomach lining of slaughtered calves, lambs, or kid goats. That makes the cheese a slaughter product rather than merely a dairy one, which is why many vegetarians avoid it too.

Most commercial cheese has moved to fermentation-produced chymosin, an enzyme made by microorganisms carrying the gene for calf chymosin. It performs identically and involves no animal. Microbial rennet from fungi is the other alternative.

A group of protected cheeses cannot make that switch. Parmigiano Reggiano, Grana Padano, Pecorino Romano, and Gorgonzola all carry designation rules that require animal rennet, so authentic versions are always slaughter-derived. Some hard cheeses also use lysozyme from egg white to prevent late blowing.

For plant-based cheese, the one genuine trap is casein. Some products marketed as dairy-free use casein for melt and stretch, which makes them lactose-free rather than vegan. It is declared as an allergen, so reading the bold text catches it.

For vegetarians checking the rennet question, look for the words microbial rennet, vegetarian rennet, or non-animal rennet, which many producers now print. Protected designation cheeses will not carry them.

Plant-based cheeses built on cashew, almond, coconut oil, potato starch, or fermented protein. The category has improved sharply on melt and flavour since around 2020.

For vegetarians rather than vegans, most supermarket own-brand cheddar and mozzarella now use non-animal rennet and label it.