Is wine vegan?
Last checked 4 September 2026
Worth checking.
Often, but not reliably. The grapes are obviously vegan; the problem is fining, where animal products are used to clear the wine and are then filtered out. They do not have to be declared.
The bit that is not grapes
Young wine is cloudy, full of suspended proteins and tannins. To clear it, winemakers add a fining agent that binds to those particles so they can be filtered out. The agent is removed with them — which is precisely why it does not have to appear on the ingredients list in most countries.
The traditional agents are all animal products:
- Isinglass, made from fish swim bladders. Very common in white wine.
- Casein, a milk protein.
- Albumin, egg white. Traditional in red Bordeaux.
- Gelatine, from animal collagen.
The bit that is
Plenty of producers now use bentonite (a clay), pea protein, potato protein or activated charcoal instead, and some wines are simply left to settle and are not fined at all. Unfiltered and “natural” wines are often vegan for this reason, though not automatically — natural describes the farming and the fermentation, not the fining.
How to actually tell
Look for the word. More producers are labelling wine “suitable for vegans” or carrying a Vegan Society trademark, and once it is on the bottle it is dependable.
Check the back label for fining agents. In the EU, isinglass, casein and egg have to be declared as allergens even when the agent has been filtered out — so “contains: milk” or “contains: egg” on a wine bottle is telling you exactly what you need to know. Their absence is a good sign, not a guarantee.
Ask. Wine merchants generally know, and most wineries will answer an email.
The rough odds
Cheap supermarket wine from a large producer is more likely to be fined with something animal-derived, because bulk production leans on the fast traditional methods. Small producers, organic wine and anything sold as unfiltered skew the other way.
There is no shortcut that works on every bottle, which is annoying, and it is the honest answer.