~ Often not vegan Wine is often not vegan. Many wines are clarified with animal-derived fining agents — isinglass from fish swim bladders, casein from milk, egg whites or gelatin — and in most countries none of them have to appear on the label. Unfined, unfiltered and certified-vegan wines are the reliable choices.
That answer surprises people, because wine is just fermented grape juice — and grapes are obviously vegan. The problem isn't what wine is made from. It's what the wine touches on its way to the bottle.
Why wine often isn't vegan: fining, explained
Freshly fermented wine is cloudy. It carries suspended proteins, yeast, tannins and grape phenolics that can leave it hazy, harsh or unstable in the bottle. Left alone, most of that settles out naturally — but it takes months, and commercial wineries rarely wait.
So they add a fining agent: a substance that binds to the unwanted particles, clumps them together and pulls them to the bottom of the tank, where they're removed. The wine comes out clear, stable and softer on the palate.
The catch is that the four most traditional fining agents are all animal-derived. Technically they're processing aids rather than ingredients — the winemaker removes them along with the haze — but trace residues can remain in the finished wine, and most vegans object to a drink that was made by pouring it through fish or milk protein, residue or not.
The four animal-derived fining agents in wine
| Fining agent | What it is | Typical use | Shown on the label? |
|---|---|---|---|
| Isinglass | Collagen from dried fish swim bladders | Polishing white wines to a bright shine | No — exempt from EU allergen labeling |
| Gelatin | Collagen boiled out of animal skin, bones and connective tissue | Softening harsh tannin, mostly in reds | No — never required |
| Casein | Milk protein (often as potassium caseinate) | Removing browning and oxidized notes in whites | Only if residues are detectable: "contains milk" |
| Egg albumin | Protein from egg whites | Smoothing tannic reds — a Bordeaux classic | Only if residues are detectable: "contains egg" |
Egg-derived lysozyme, an enzyme used to control bacteria in some wines, falls under the same egg-labeling rule. And these agents — isinglass above all — have a long history in brewing too, which is why beer has exactly the same problem. Guinness famously re-engineered its filtration to drop isinglass; that full story is here.
Fining agents are just one entry in a much longer list of animal derivatives hiding in everyday products. Our hidden animal ingredients guide covers the rest.
Why the label can't answer "is this wine vegan?"
Here's the frustrating part: wine labeling law, even at its strictest, was written to protect allergy sufferers — not to inform vegans. That produces three big blind spots.
The EU allergen rule only covers milk and egg, above a threshold
Since 30 June 2012, wines sold in the EU (made from the 2012 harvest onward) must declare milk- and egg-based fining residues under Commission Implementing Regulation (EU) No 579/2012 — but only when the residue is detectable in the finished wine above 0.25 mg per litre, according to the Food Safety Authority of Ireland. A wine fined with casein whose residue falls below that limit carries no warning at all.
It gets worse for vegans: isinglass and gelatin aren't covered by the rule in the first place. Isinglass used in wine holds a permanent exemption from fish-allergen labeling (Directive 2007/68/EC), and gelatin was never on the wine allergen list. A wine fined with fish bladder can be legally silent about it.
The 2023 EU ingredient list doesn't close the gap
Since 8 December 2023, EU wine must carry an ingredient list and nutrition declaration under Regulation (EU) 2021/2117 — often delivered as a QR-code "e-label". Progress, yes. But fining agents that are removed from the finished wine count as processing aids, and processing aids don't have to be listed. Only the allergenic milk and egg agents must be flagged, under the same detection threshold as before.
In the US, the label says even less
American wine labels aren't required to list ingredients at all, and allergen declarations remain voluntary. The TTB proposed mandatory allergen labeling in January 2025, but the rule hasn't been finalized as of mid-2026 — and it would give producers about five years to comply. Even then, it would answer the allergy question, not the vegan one.
A wine label can prove a wine is not vegan — "contains milk", "contains egg" — but it can never prove that it is. For that you need the producer's word, a certification, or a database.
If you want to get better at spotting what labels do and don't reveal, our field guide to reading food labels as a vegan goes deeper.
Check a bottle in seconds with VeganCheckr
The label won't tell you how a wine was fined — the scanner often can:
- Open VeganCheckr, tap Scan and point your camera at the barcode on the bottle.
- Read the verdict — vegan, vegetarian or non-vegan — with the exact flagged ingredients shown as evidence.
- Found a printed ingredient list on the back label? Use the ingredient scan to photograph and analyze it directly.
How wine is clarified without animals
None of the animal agents are actually necessary. Effective vegan alternatives exist for every fining job:
- Bentonite — a mineral clay that strips haze-forming proteins; the workhorse for white and rosé wines.
- PVPP — a synthetic polymer that binds browning polyphenols, doing casein's job without the milk.
- Plant proteins — pea and potato protein finings are commercially established stand-ins for gelatin and egg white.
- Fungal chitosan — EU winemaking rules only permit chitosan of fungal origin (from Aspergillus niger), precisely to avoid the allergen risk of the crustacean-shell version.
- Time and gravity — many producers simply skip fining and let the wine settle on its own.
That last option is why "unfined and unfiltered" on a back label is such a good sign. It's common among natural and low-intervention winemakers, and a slight haze in the glass is harmless — arguably a feature.
How to actually find vegan wine: four reliable checks
1. Look for a vegan certification. The Vegan Society Trademark, V-Label and BeVeg (a certification scheme specific to alcohol) all audit fining practices, not just ingredients. A certified bottle is the zero-effort option.
2. Check Barnivore. Barnivore is a long-running community directory of drinks checked directly with producers — over 60,000 entries, more than 20,000 of them wines. If your bottle's brand is listed, you'll get a straight vegan-or-not answer.
3. Read the back label for the giveaways. "Contains milk" or "contains egg" is an instant disqualifier. "Unfined", "unfiltered" or a vegan logo point the other way. Silence, as we've seen, proves nothing.
4. Scan the barcode and build a saved list. Once a bottle checks out, you shouldn't have to research it twice. This is the same routine that works for any food product — verify once, save, repeat.
Build your own vegan wine list
Turn one-off checks into a shelf of safe bottles:
- Scan a bottle's barcode in the shop and check the verdict before it goes in the basket.
- Save the wines that check out — your scan history works offline, so your go-to bottles are there even in a supermarket with no signal.
- Use product comparison to line up two wines side by side on sugar, calories and alcohol.
Frequently asked questions
Does "contains sulphites" mean a wine isn't vegan?
No. Sulphites are sulfur-based preservatives with no animal origin, and the warning is unrelated to fining. A wine labeled "contains sulphites" can be fully vegan. The declarations that do rule a wine out are "contains milk" and "contains egg".
Are organic or natural wines automatically vegan?
No. Organic certification covers how the grapes are farmed, not how the wine is fined — an organic winery can still clarify with egg whites or casein. Natural and unfined wines are often vegan in practice, but only a vegan certification or the producer's confirmation makes it certain.
Is Champagne vegan?
Not always. Champagne and other sparkling wines can be fined with the same animal-derived agents as still wine. Many houses avoid them, and the traditional riddling process doesn't require animal products, but you need to verify each producer — Barnivore lists most major Champagne brands.
Does the QR-code ingredient list on EU wine bottles show fining agents?
Usually not. The e-label required since December 2023 lists ingredients, but fining agents removed from the finished wine count as processing aids and don't have to appear. Only milk- and egg-based agents must be flagged, and only when residues are detectable above 0.25 mg per litre.
Check any product in seconds
VeganCheckr scans barcodes and ingredient labels, flags hidden animal ingredients and E-numbers, and shows you the evidence. Free on the App Store.
Scan with your iPhone camera