Rennet is a substance usually taken from baby calves to aid in the production of cheese. There are microbial substitutes that are sometimes used, but this is on a rare occasion and is usually specified on the foods packaging. Why is it taken from a baby calf's stomach? Because this is an enzyme found specifically in their stomachs to help them digest their mother's milk. The enzymes that make up rennet coagulates milk, causing it separate into curds and whey, to help form cheese.
So therefore, whey is the liquid leftover after milk has been curdled and strained. So if the whey was produced using an animal derived rennet, then the product containing whey is not permissible for consumption. This by-product is used in a lot of cheeses, cookies, crackers, breads and pastries. So you shouldn't only look for whey in cheese products!
What is the enzyme derivative of KRAFT Singles?
The process of converting milk into cheese is dependent on coagulating through the use of an enzyme. The enzymes in this product are sourced from both microbial fermentations and animal sources. The animal sources are cow, sheep, and goat.Well, sometimes they DO use microbial enzymes, which would make the cheese undeniablyhalal. However, because they bounce between microbial and animal enzymes, we never know which is being used at the time we pick up a pack of cheese, and also the equipment would be mixed without being cleaned as well. So we should avoid Kraft Singles inshaAllah, I believe they aren't even kosher either.
Is VELVEETA Kosher?KRAFT MACARONI AND CHEESE:
Due to an ingredient in this product and/or the manufacturing process, VELVEETA Pasteurized Prepared Cheese Product is not certified Kosher.
Again, this would be an animal derivative in used in Velveeta cheeses and are not halal.
What enzyme derivative is present in KRAFT© Macaroni & Cheese?
....The enzymes used to make our cheese powder in packages of Kraft Macaroni & Cheese are derived from an animal source (calves and sheep).
And so again, this too contains animal derived enzymes.
Conclusion: Please be sure to check your food ingredients for RENNET, WHEY, and ENZYMES.