How many different cheeses contain pig enzymes?

It's impossible to give you an exact number of cheeses that contain pig enzymes. Here's why:

* Rennet: The enzyme used to coagulate milk in cheesemaking is called rennet. Traditionally, it was extracted from the stomachs of young calves.

* Animal vs. Microbial Rennet: There are two main types of rennet:

* Animal rennet: Derived from animals, primarily calves, but also sometimes from pigs and lambs.

* Microbial rennet: Made using genetically modified microorganisms. This is a vegetarian alternative.

* Labeling: While many cheeses explicitly state "vegetarian rennet" on the label, not all cheese producers are required to label their rennet source.

* Regional Variations: Cheesemaking traditions vary across the world, and the use of animal rennet is more common in some regions than others.

Therefore, to know for sure if a cheese contains pig enzymes, you need to:

* Read the label: Look for "vegetarian rennet" or "microbial rennet."

* Contact the cheesemaker: If the label isn't clear, contact the cheesemaker directly to inquire about their rennet source.

If you are concerned about consuming animal products, opting for cheeses labeled "vegetarian rennet" is the safest choice.