Milk curdler in cheesemaking (6)

I believe the answer is:

rennet

(Other definitions for rennet that I've seen before include "Agent for cheesemaker" , "substance used to make cheese" , "Cheesemakers use this" , "what you need to make cheese" , "Substance used to curdle milk for cheese-making" .)

I've seen this clue in The New York Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.