What is the big deal about rennet, and what part does it play in the cheesemaking process?
Cheese is traditionally made with milk, salt, cultures and rennet. Rennet allows cheesemakers to efficiently turn fresh milk into curd, a technique they’ve been using for thousands of years. Over time, milk curds on its own, but by that time, the milk may sour. Rennet speeds up this process so proteins in the milk form curd, and the liquid separates and run off as whey.