It surprises a lot of people to learn that a glass of wine, made from nothing but grapes, is not automatically vegan. The reason has nothing to do with the ingredients you would expect and everything to do with a step most drinkers never think about: fining, the clarification process that removes tiny suspended particles to give wine and beer their clear, bright appearance before bottling.
What fining actually is and why it's used
Freshly fermented wine and beer are naturally hazy, cloudy with proteins, tannins, and yeast particles left over from fermentation. Fining agents are added to bind with these particles and help them settle out or filter more easily, producing the clear, bright liquid consumers expect. Some fining agents are entirely mineral or plant based, like bentonite clay or pea protein, but a long tradition in winemaking and brewing relies on animal derived agents instead, largely because they have historically been effective and inexpensive.
The common animal derived fining agents
- Isinglass: a collagen based substance derived from fish bladders, historically one of the most common fining agents in beer production
- Gelatin: made from boiled animal bones, skin, and connective tissue, used in both wine and beer clarification
- Egg albumin: dried egg whites, traditionally used in fining certain red wines, particularly in Bordeaux style production
- Casein: a milk protein used to remove excess tannins and browning compounds, particularly in white wine production
- Chitin: derived from crustacean shells, occasionally used as an alternative to isinglass in some wine and beer production
Why this doesn't show up on the label
The reason most drinkers have no idea their favorite wine or beer might involve animal products traces back to how fining agents function. Because they are used purely as a processing aid and bind with the particles they are removing rather than remaining in the finished product, most food labeling regulations do not require them to be disclosed as ingredients, since technically very little to none of the fining agent itself ends up in what you actually drink. This is legally sound but genuinely unhelpful for anyone trying to make an informed choice, since a bottle can be produced using fish bladder derived isinglass with absolutely no mention of it anywhere on the label.
How to actually find vegan wine and beer
The most reliable approach is looking for products explicitly labeled vegan or checking dedicated databases that track fining agents by brand and specific bottling, since even within a single winery's lineup, different wines can use different fining methods. Many producers have shifted toward plant based alternatives like pea protein, bentonite clay, and activated charcoal specifically to capture the growing vegan and vegetarian market, and this shift has accelerated noticeably over the past several years as demand has grown. The Vegan Society operates a trademark certification program that some wine and beer producers use specifically to signal their products avoid animal derived processing aids entirely, giving consumers a much faster way to identify compliant products than researching each bottle individually.
Why unfined and unfiltered isn't automatically the answer
Some natural wine producers skip fining altogether, producing what is labeled unfined or unfiltered wine, and it is tempting to assume this automatically makes a bottle vegan. That is often true, but not guaranteed, since a winery could still use animal derived products elsewhere in the process, and the absence of fining says nothing about other production choices. It is also worth noting that unfined wines tend to be hazier in appearance and can develop more sediment over time, a genuine tradeoff some drinkers enjoy for the flavor complexity it can preserve and others find simply looks unappetizing in the glass.
Craft beer's parallel evolution
The craft beer world has moved somewhat faster than wine on this front, largely because isinglass use has become less universal as more breweries adopt cold crashing and centrifugation, mechanical clarification methods that achieve a similarly clear final product without any animal derived fining agent at all. Many craft breweries now proactively advertise their beers as vegan friendly specifically because they have already moved to these mechanical methods for other quality reasons, making vegan compliance something of an accidental byproduct of modern brewing technique rather than a deliberate ethical choice in every case, though plenty of breweries do market it deliberately as well.
Why this matters beyond the technical detail
For anyone who has chosen a plant based lifestyle specifically to reduce their consumption of animal derived products, discovering that a glass of red wine might have been clarified using fish bladder collagen or dried egg whites can feel like a genuine blind spot in an otherwise carefully considered diet. Advocacy organizations like PETA have published guidance specifically flagging this issue for years, pushing for clearer labeling requirements around processing aids, though regulatory change on this front has been slow across most major wine producing regions. Until labeling requirements catch up, checking a dedicated vegan wine and beer database or looking for explicit vegan certification remains the most reliable way to actually know what went into clarifying your drink before it reached the glass.
What to actually ask for at a restaurant or bar
Restaurant wine lists rarely include fining information, and servers are usually not trained to know the answer either, so the most practical approach in a dining setting is to ask whether the house carries any wines specifically marketed as vegan, a question that has become common enough in 2026 that many wine focused restaurants now flag at least a few bottles on the list this way. For beer, asking whether a brewery uses cold filtration rather than traditional fining is a more specific and often more successful question, since bar staff at craft focused venues tend to know their supplier's production methods better than a typical wine list turnover allows for.
A small detail with a genuinely bigger footprint than expected
Fining agents are a genuinely easy thing to overlook, since nothing about the finished bottle gives any visual or textural clue about how it was clarified. But given how widespread animal derived fining remains across conventional wine and beer production, it is one of the more common ways non-vegan animal products end up in an otherwise plant based evening without anyone realizing it. The good news is that the plant based alternatives work just as well, and a growing number of producers have made the switch, meaning finding a genuinely vegan bottle in 2026 is considerably easier than it was even five years ago.
E Numbers and Additives: Which Ones Are Animal, Which Ones Are Not
Additive codes look like a wall of noise, which is exactly why they are worth learning. Only a handful are animal-derived, another handful are genuinely ambiguous, and the rest of the wall is minerals, acids, and seaweed. Once you know which is which, a European label becomes faster to read than an American one.
The system, briefly
E numbers are the European Union's approved-additive codes, and the same substances appear on US labels under their names rather than a code. The number tells you the function: 100s are colours, 200s preservatives, 300s antioxidants and acidity regulators, 400s thickeners and emulsifiers, 500s acidity regulators and anti-caking agents, 600s flavour enhancers, 900s glazing agents and sweeteners, 1000s and above miscellaneous.
Being approved says nothing about the source. The same emulsifier code can cover a plant version and an animal version.
Always animal
| Code | Name | What it is |
|---|---|---|
| E120 | Cochineal, carmine, carminic acid | Red dye from scale insects |
| E441 | Gelatin | Collagen from pig and cattle hide and bone |
| E542 | Bone phosphate | Ground animal bone, used as an anti-caking agent |
| E901 | Beeswax | Hive product, used as a glaze |
| E904 | Shellac | Resin from the lac insect |
| E913 | Lanolin | Wax from sheep wool |
| E966 | Lactitol | Sugar alcohol made from lactose |
| E1105 | Lysozyme | Enzyme from egg white |
Eight codes. That is the entire always-animal list in common food use, which is a much shorter memorisation job than most people expect.
Could be either
| Code | Name | Why it is ambiguous |
|---|---|---|
| E322 | Lecithin | Nearly always soy or sunflower; egg lecithin exists |
| E422 | Glycerol / glycerin | Vegetable oil or tallow |
| E430 to E436 | Polyoxyethylene and polysorbates | Built on fatty acids of either origin |
| E470 to E483 | Fatty acid salts and esters, including E471 mono- and diglycerides | Plant oils or animal fats |
| E570 | Stearic acid | Palm, coconut, or animal fat |
| E627, E631, E635 | Disodium guanylate, inosinate, ribonucleotides | Yeast fermentation, or meat and fish |
| E640 | Glycine | Usually synthetic, occasionally from gelatin |
| E920, E921 | L-cysteine | Synthetic, fermented, feathers, or hair |
| E1000 | Cholic acid | Bile |
E471 is by far the one you will meet most often, because it is in a huge share of bread, ice cream, margarine, and biscuits. Most European supply is plant-derived, and many manufacturers will confirm it in an email, but the label alone cannot tell you.
Fine, despite the reputation
- E100 curcumin, E160a carotenes, E160b annatto, E160c paprika extract, E162 beetroot red, E163 anthocyanins. Plant pigments, and the usual alternatives to carmine.
- E101 riboflavin. Produced by fermentation.
- E406 agar, E407 carrageenan, E440 pectin, E410 locust bean gum, E412 guar gum, E415 xanthan gum, E418 gellan gum. Seaweed, fruit, seed, and microbial thickeners.
- E300 ascorbic acid, E330 citric acid, E270 lactic acid. All produced industrially. Lactic acid is named for milk but is normally fermented from corn or beet sugar.
- E170 calcium carbonate, E500 sodium bicarbonate, E336 potassium tartrate. Mineral salts.
- E621 monosodium glutamate. Fermented, and vegan. The health folklore around it is a separate and largely unsupported story.
The processing aids that never appear
A processing aid is used during manufacture but is not an ingredient in the finished product, so it need not be declared. Three matter here:
- Isinglass, gelatin, casein, and egg white in drinks. Used to clarify beer, wine, and cider. This is why a bottle can be entirely plant-based in ingredients and still not be vegan, and why third-party vegan marks on alcohol are genuinely useful rather than decorative.
- Bone char in cane sugar. A filter medium in some US refineries. Beet sugar and organic cane sugar avoid it.
- Animal-derived enzymes in cheese and baked goods. Often listed simply as "enzymes".
How to use this without carrying a table around
Paste the ingredients panel into our ingredient checker, which encodes every rule above and explains each hit. After a few weeks of doing that on your regular shop, you will find the same six or seven codes account for almost every flag, and the tool becomes unnecessary.
For background on how additives are assessed and approved in the first place, the FDA's colour additive listings in 21 CFR Part 73 is the primary source, and the World Health Organization's fact sheet on food additives covers the international picture.
Why the same product differs between countries
A brand you trust at home can be formulated differently abroad, and this catches out travellers constantly. Three reasons:
- Different approved additive lists. Some colours and emulsifiers permitted in one jurisdiction are not permitted in another, so the manufacturer substitutes.
- Local supply chains. The same E number can be sourced from palm oil at one plant and from tallow at another, purely on cost and availability.
- Different labelling rules. The EU requires E numbers or names for additives and requires allergens to be emphasised in the ingredients list itself; the US uses names and a separate "contains" statement. Neither system requires disclosure of processing aids.
The practical consequence is that a product being vegan in one country tells you very little about the same product in another, and that a vegan certification mark applies to the specific market it was issued in.
When the label genuinely cannot answer it
For ambiguous additives, emailing the manufacturer works far more often than people expect. Ask a specific question - "is the mono- and diglycerides in product X of plant or animal origin?" - rather than "is this vegan?", for exactly the same reason it works better with a server in a restaurant.
General information only. Additive sourcing varies by manufacturer, region, and production run; where it matters to you, ask the manufacturer directly.