Where enzymes show up
- Cheese uses rennet (chymosin) to set the milk. Rennet can come from calf stomach, from microbes, or from fermentation-produced chymosin, which is now used for much of the cheese made in the US.
- Lipase gives some Italian cheeses, such as Parmesan and Romano, their sharp flavor. It's often animal-derived.
- Pepsin is frequently pork-derived.
- Bread and baked goods use amylase and other enzymes, which are usually microbial or fungal.
What do scholars say about rennet?
Pork-derived enzymes are not accepted. For rennet from cattle or sheep, scholars differ: a classical position within the Hanafi school holds rennet acceptable even from an animal that wasn't Islamically slaughtered, while others require it to come from a halal-slaughtered animal. Microbial and fermentation-produced enzymes are broadly accepted.
How to check a product
- Look for "microbial enzymes," "vegetable rennet," or "non-animal rennet."
- A vegetarian or halal certification settles it.
- For cheese, the manufacturer can usually tell you the rennet type.
How Mutahhir handles it
Enzymes with no stated source are marked Review Required, and the ingredient row and the overall result say the same thing. Named microbial enzymes are not flagged.
Common questions
Is cheese halal?
Cheese made with microbial or fermentation-produced rennet is broadly accepted. Cheese made with animal rennet depends on the animal, how it was slaughtered, and which scholarly position you follow.
Is pepsin halal?
Pepsin is frequently pork-derived, so unless a non-pork source is stated, it's best treated as not halal.