Is L-Cysteine (E920) Vegan?
An absolute guide to identifying l-cysteine (e920) on nutrition labels.
❌ NO, L-CYSTEINE (E920) IS NOT VEGAN.
The Quick Answer
L-Cysteine is an amino acid typically extracted from animal sources like feathers or hair.
Common Source: Duck feathers, pig bristles, or human hair.
What is L-Cysteine (E920)?
An amino acid acting as a dough conditioner, used by commercial bakeries to speed up processing and improve the elasticity of breads and doughs.
Where is it usually found?
You can frequently find this ingredient hiding in:
- Commercial bread
- Bagels
- Pizza dough
- Fast-food buns
Vegan Alternatives to L-Cysteine (E920)
If you're avoiding l-cysteine (e920), look for these plant-based alternatives instead:
- Synthetic L-cysteine
- Plant-based conditioning agents
- Longer dough proofing times
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