Last reviewed May 2026 · 1 min read
Is Rennet vegan?
Also known as: Chymosin, Rennin
Not Vegan
Derived from animals — avoid.
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No — Traditionally extracted from the inner mucosa of the fourth stomach chamber of calves.
01 · The basics
What is Rennet?
A complex set of enzymes used to curdle milk for cheese making.
02 · The source
Where it comes from
Traditionally extracted from the inner mucosa of the fourth stomach chamber of calves.
03 · Alternatives
Best vegan alternatives
Microbial rennet
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Frequently asked
FAQ
Is rennet vegan?
No, traditional rennet is not vegan as it is derived from the stomach lining of calves. However, microbial rennet and other non-animal rennets are available.
What is rennet made of?
Traditional rennet is an enzyme complex, primarily chymosin, extracted from the fourth stomach of young ruminant animals like calves.
What is vegan rennet?
Vegan rennet, also known as microbial rennet, is produced by microorganisms and can be used to curdle milk for cheese making without any animal products.
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