Does Rennet Expire?
Yes. Rennet loses clotting activity over time, and faster if it has been stored warm or in light. A familiar dosage giving a slower set than usual is one of the most common signs of a coagulant past its best.
4 min read
Topic
Rennet 101
What rennet is, the forms it comes in, how it works, and how cheesemakers use it.
How to Store Liquid Rennet
Liquid rennet loses clotting activity with heat, light and time, so it is kept cool, closed and out of direct light, and used within the period stated on its label. Always follow the storage instructions supplied with your specific product.
4 min read
Liquid vs. Powder Rennet
Liquid rennet is measured by volume and disperses immediately once diluted. Powder rennet is measured by weight and must be dissolved first. Both work; the choice is about dosing workflow, storage and batch size.
5 min read
Liquid Rennet vs. Tablets
Liquid rennet and rennet tablets both coagulate milk. Liquid is easier to measure and disperses immediately; tablets are compact and convenient for small batches but must be fully dissolved before use.
4 min read
What Is Vegetarian Rennet?
Vegetarian rennet is a general term for milk coagulants that do not come from animal stomachs. In practice it usually means microbial rennet produced by fermentation, and sometimes plant-derived coagulants such as thistle.
4 min read
Microbial Rennet vs. Animal Rennet
Microbial rennet is produced by fermentation; animal rennet is extracted from the stomachs of young ruminants. Both coagulate milk. The practical differences are dietary suitability, tradition, and how each behaves during long ripening.
6 min read
What Is Microbial Rennet?
Microbial rennet is a milk-coagulating preparation produced by microbial fermentation rather than taken from animal stomachs. It does the same job in the vat: destabilising milk protein so a curd forms.
6 min read
What Does Rennet Do in Cheesemaking?
In cheesemaking, rennet coagulates the milk so that a cuttable curd forms. It also influences how firm that curd becomes, how cleanly it cuts, and — in cheeses that are held or aged — how the protein breaks down during ripening.
5 min read
What Is Rennet and How Does It Work?
Rennet is a milk-coagulating ingredient used in cheesemaking. It contains enzymes that act on the milk protein casein so that liquid milk forms a curd firm enough to cut, drain and turn into cheese.
7 min read