What Is Vegan Wine? Why Not All Wine Is Plant-Based

Wine is made from grapes, so it seems like it should be vegan by default. For a surprising number of bottles, it is not. The gap has nothing to do with the fruit and everything to do with a clarifying step called fining, where winemakers have long reached for animal products to polish a cloudy young wine clear. Vegan wine is simply wine made without any of those animal inputs. This guide explains what makes a wine vegan, which animal agents hide in conventional bottles, the plant and mineral alternatives, and how to spot a vegan wine on a crowded shelf.

What Is Vegan Wine?

Vegan wine is wine produced without any animal-derived product at any stage, from vineyard to bottle. In practice, the only place animals usually enter winemaking is fining — the step that clears haze out of young wine. Conventional fining agents include isinglass from fish, gelatin from animal collagen, casein from milk, and albumin from egg whites. A vegan winemaker swaps those for mineral or plant-based agents such as bentonite clay, pea protein, or activated charcoal, or leaves the wine unfined altogether. Everything else — the grapes, yeast, and the wine itself — is already plant-based.

Why Isn't All Wine Vegan? The Fining Problem

Freshly fermented wine is rarely bright. It carries a suspension of proteins, spent yeast cells, grape fragments, and tannin that can leave it cloudy, and sometimes coarse or bitter. Winemakers can wait for these particles to settle, but that is slow and incomplete, so most reach for fining instead.

Fining works by adding a substance that carries an opposite electrical charge to the haze particles. The agent binds to them, clumps together, and sinks, taking the cloudiness with it. The winemaker then racks the clear wine off the sediment and usually filters it before bottling. The fining agent itself is removed — it does not stay in the finished wine in any meaningful amount.

Here is the catch. The most effective and traditional fining agents happen to come from animals. Egg whites clarify red wine beautifully, isinglass brightens white wine, and gelatin softens harsh tannin. Because these materials were used in the process, a wine fined with them is not vegan — even though only trace residues, if any, remain in the glass. That is why a drink pressed entirely from fruit can still fail a vegan standard.

The Animal-Derived Fining Agents to Know

If you have ever wondered what could possibly be non-vegan about grape juice, this is the list. Four animal-derived agents dominate, plus one that depends on its source and one that history has retired.

• Isinglass — a form of collagen from fish swim bladders, prized for making white and sparkling wine exceptionally bright. It is the most common reason a crisp white is not vegan.
• Gelatin — collagen extracted from pig or cattle skin and bones. It is a strong tannin remover, used on reds and whites to reduce bitterness and astringency.
• Albumin (egg white) — the classic fining agent for red wine, a technique with deep roots in Bordeaux. A few egg whites per barrel gently smooth tannin without stripping too much color or fruit.
• Casein — a milk protein, often as potassium caseinate, used mainly on white wine to remove browning and lighten color.
• Chitosan — this one is a genuine "it depends." Chitosan can be derived from fungus, which is vegan, or from the shells of crustaceans, which is not. The label rarely says which.
• Dried blood — animal blood was a traditional red-wine fining agent, but it has been banned across the European Union for decades on food-safety grounds and is no longer used in modern winemaking.

Because these agents are process aids rather than ingredients, they were long invisible to drinkers. That changed for allergen safety: under EU Regulation 1169/2011 and its implementing rules, wines that use egg- or milk-based fining must declare "contains egg" or "contains milk" if residues are detectable above 0.25 mg/L. That mandatory line is a useful, if indirect, clue that animal fining was involved.

The Vegan Fining Alternatives

The good news for winemakers who want a vegan bottle is that excellent non-animal fining agents exist, and most producers who care can clarify a wine just as well without touching an animal product.

• Bentonite — a fine volcanic clay (montmorillonite) that carries a negative charge and pulls out protein haze. It is the workhorse of vegan white-wine fining.
• Pea and potato protein — plant proteins that mimic what gelatin does, softening tannin and clarifying reds and whites. They have become the go-to gelatin replacement.
• Activated charcoal (carbon) — used in small amounts to strip unwanted color or off-odors.
• PVPP (polyvinylpolypyrrolidone) — a synthetic polymer that removes bitterness and browning, then filters out cleanly.
• Silica gel (kieselsol) and kaolin — mineral agents often paired with plant proteins to speed settling.

The OIV International Code of Oenological Practices — the reference book of permitted winemaking techniques — lists all of these among the accepted fining agents, so a vegan winemaker is not improvising. They are choosing from the same approved toolkit, minus the animal-derived entries.

Fining agent	What it comes from	Typically used on	Vegan?
Isinglass	Fish swim bladders	White and sparkling, for brightness	No
Gelatin	Pig or cattle collagen	Red and white, softens tannin	No
Albumin	Egg whites	Red wine, a Bordeaux tradition	No
Casein	Milk protein	White wine, removes browning	No
Chitosan	Fungus (vegan) or shellfish (not)	Clarifying and stabilizing	Depends
Bentonite	Volcanic clay	White wine, protein haze	Yes
Pea or potato protein	Plants	Red and white, replaces gelatin	Yes
Activated charcoal	Carbon	Color and off-odor removal	Yes

Are Unfined and Unfiltered Wines Vegan?

There is a simple shortcut to a vegan bottle: skip fining entirely. A wine labeled unfined was never treated with any clarifying agent, animal or otherwise, which makes it vegan by default. Many are also unfiltered, meaning no filter was passed through the wine before bottling either.

The trade-off is cosmetic. Unfined wines can look slightly less brilliant, may throw a little sediment, and occasionally show a faint haze — none of which affects safety or, in most cases, flavor. Some drinkers even prefer the extra texture and aromatic detail that fining can shave away. This is the same hands-off philosophy behind natural wine, which is usually unfined and therefore usually vegan, though "natural" carries no legal guarantee. If you enjoy that style, an unfined bottle is an easy, reliable vegan choice.

How to Tell If a Wine Is Vegan

Fining agents rarely appear in an ingredient list, so spotting a vegan wine takes a little label literacy. Four reliable signals, in order of certainty:

• A certification logo. The Vegan Society sunflower, the V-Label, and BeVeg are independent marks that verify no animal product was used. A logo is your strongest guarantee.
• A plain-language claim. Many producers simply print "suitable for vegans" or "vegan-friendly" on the back label. Trustworthy, if less rigorous than certification.
• "Unfined" in the tasting notes. As above, unfined wine is vegan by default even without a vegan badge.
• A database or a question. The crowd-sourced Barnivore directory catalogs thousands of wines, beers, and spirits by brand. When in doubt, a good wine shop can usually tell you or check with the importer.

Reading these cues is really just an extension of general label fluency. Our guide to how to read a wine label walks through the rest of the back-label shorthand, from sulfites declarations to the allergen lines that hint at egg or milk fining.

Does Vegan Wine Taste Different?

This is the question most drinkers actually care about, and the honest answer is reassuring: no, not in any way you could reliably pick out. A vegan and a non-vegan version of the same grape, region, and vintage are essentially indistinguishable. Fining removes a small amount of protein and tannin, so a heavily fined wine can feel a touch softer and a well-made unfined wine a touch more textured — but those are subtle shades, not a flavor gap.

Everything that genuinely shapes a wine's character — the grape variety, the terroir it grew in, ripeness, oak, and the winemaker's hand — sits far upstream of the fining choice. If you want to train yourself to tell those things apart, that is exactly what structured practice is for.

Vegan vs Organic vs Natural vs Biodynamic

These four labels get jumbled together on shelves and menus, but they answer different questions. Only vegan is specifically about what went into making the wine. The others describe how the grapes were farmed or how hands-off the cellar was — and none of them guarantees the absence of animal fining.

Label	What it tells you	Rules out animal fining?	Certified?
Vegan	No animal products used at any stage	Yes — that is the whole point	Sometimes (Vegan Society, V-Label, BeVeg)
Organic	Grapes grown without synthetic chemicals	No — animal fining is still allowed	Yes (USDA, EU leaf)
Natural	Minimal cellar intervention, few additives	Usually, because it is often unfined	No legal definition
Biodynamic	Stricter organic farming plus a philosophy	No — it is a farming standard	Yes (Demeter, Biodyvin)

The practical takeaway: an organic wine can absolutely be fined with egg white, and a biodynamic estate might use isinglass. If being vegan is your priority, the farming badges are not a substitute — you still need a vegan claim, a certification, or an unfined bottle.

How to Shop for Vegan Wine as a Beginner

You do not need to memorize a chemistry set to drink vegan. A few simple habits cover almost every situation.

• Start with the logo. Train your eye to spot the Vegan Society sunflower or V-Label on the back. Once you know the marks, they jump out.
• Lean on unfined and natural styles. They are vegan by default and easy to find in shops that stock them.
• Keep Barnivore handy. A quick brand search settles most doubts before you buy.
• Ask, and reward the shops that know. Merchants who can answer the vegan question tend to be the ones worth returning to.
• Follow the grape you love. Vegan versions exist for nearly every style, so you rarely have to compromise on what you actually want to drink.

Learning to read these signals is part of the same journey as developing your palate and getting comfortable with how to taste wine in the first place. The more fluent you become, the less any single label intimidates you. Vegan wine is not a niche or a compromise — it is most of what is already in your glass, minus one old-fashioned clarifying trick. Explore the full range of styles, from crisp whites to structured reds, over at Sommy, and let curiosity, not marketing, lead the way.

Sources

1. Commission Implementing Regulation (EU) No 579/2012 — labelling of egg and milk fining agents in wine — EUR-Lex, European Union, 2012
2. International Code of Oenological Practices — permitted fining agents — International Organisation of Vine and Wine (OIV)
3. The Vegan Trademark and vegan food and drink standards — The Vegan Society