Oak Tannins (Oenotannins) — Hidden Processing Agent — Is It Vegan?
Also known as: Oenological tannins, Ellagitannins, Commercial tannins, Gallotannins
Vegan
No animals or animal-derived substances are involved in producing this agent.
Not required on labels
Not required on labels. Wines may state 'contains tannins' for consumer information but this is not mandatory.
Source
Extracted from oak wood (Quercus robur, Quercus sessilis), oak galls, grape seeds, or grape skins. Entirely plant-derived.
Used In
Wine production (stabilisation, antioxidant activity, fining, texture modification), craft beer (structure and astringency), cider production.
How to Avoid
No need to avoid — oak tannins are vegan.
Editorial Notes
Tannins are a complex group of polyphenolic compounds present naturally in grape skins and seeds. Commercial oenological tannins are added to wine to improve structure, provide antioxidant protection, and aid clarification (tannins can bind and precipitate proteins). They are a vegan-friendly alternative or complement to animal-derived fining agents.