Vegan condiments and sauces: the fridge door aisle, sorted by why each one fails

Anchovy paste sits at the bottom of a bottle of Lea & Perrins the way it has sat in fermented fish sauces for roughly 2,500 years, and that single fact explains why the fridge door is where a careful shopper gets caught more than anywhere else in the kitchen. Condiments are concentrated: a whole dish's worth of flavour compressed into two tablespoons, which means the animal ingredient doing the work is often a small, specific, and easy to miss addition rather than the headline ingredient. The useful move is to sort what you're looking at into one of four categories, because each one is checked differently.

The first two of the seven questions below are the ones people search most, and they happen to sit at opposite ends of this list: Worcestershire sauce is case one, about as obvious as it gets, and sugar refining is case two, genuinely invisible on a US label.

Worcestershire sauce descends from garum, the fermented fish sauce that Roman cooks stirred into nearly everything, made by salting whole small fish, usually sardines or anchovies, and letting them break down in the sun until the proteins hydrolysed into free glutamic acid, the amino acid responsible for savoury taste. The 4th-century Roman writer Apicius built entire recipes around it. Worcestershire sauce was reinvented, not carried forward, by the English chemists John Lea and William Perrins in the 1830s, working from a recipe reportedly brought back from British India, and the anchovies do the identical job: months of fermentation in vinegar and molasses convert fish protein into the glutamate that gives the sauce its long savoury pull, the same chemistry the Romans were exploiting without knowing why.

Lea & Perrins' original Worcestershire sauce lists anchovies plainly in both its US and UK versions and is not vegan in either market. The full ingredient and brand verdict lives on its own page. Several brands now make a vegan version by replacing the fish with soy sauce, tamarind and extra fermentation time to rebuild the same glutamate hit without the anchovy, and the resulting sauce is close enough that most recipes will not notice the swap.

In the United States, mayonnaise is not just a recipe, it is a legal category: 21 CFR 169.140 defines mayonnaise as an emulsion of vegetable oil, an acidifying ingredient and an egg yolk ingredient, requiring at least 65 percent oil by weight. That rule had teeth in 2015, when the FDA sent Hampton Creek a warning letter over its egg-free Just Mayo, arguing the name and egg-shaped logo implied a product it legally could not be; the two sides settled with Hampton Creek keeping the name but adding a prominent "egg-free" callout, since the product genuinely contained no egg. The episode is a tidy illustration of why a plant-based spread in a US store often can't legally call itself mayonnaise even when it performs identically.

The chemistry explains why the substitution actually works rather than just being a legal workaround. Real mayonnaise emulsifies because lecithin, a phospholipid concentrated in egg yolk, has one end that binds oil and one that binds water, letting it coat tiny oil droplets and keep them suspended in the vinegar and water phase instead of separating out. Aquafaba, the viscous liquid left over from cooking chickpeas, contains its own dissolved proteins and starches, and when whisked they unfold and arrange themselves at the oil-water interface the same way lecithin does, which is why aquafaba whips into a stable foam and holds an emulsion almost as well as egg white. Commercial vegan mayonnaises more often use pea protein isolate or soy lecithin for the same reason: a protein or phospholipid with the right amphipathic shape does the emulsifying, and the plant source doesn't matter to the physics.

Standard tomato ketchup from major brands is vegan: tomatoes, vinegar, spices and a sweetener, with no dairy, egg or gelatin anywhere in a normal recipe. The complication is which sweetener. Heinz's classic ketchup uses high fructose corn syrup, which involves no animal processing at any stage, but Heinz Simply Tomato Ketchup switches to cane sugar, which in the US is often refined using bone char, and Heinz's honey-sweetened variant contains honey outright and is not vegan by any reading. The rule of thumb: HFCS-sweetened ketchup sidesteps the sugar question entirely, while any cane-sugar ketchup inherits the same uncertainty as everything else on this page.

BBQ sauce fails vegan almost exclusively on honey, which shows up constantly in glazes marketed as "honey barbecue" or "sweet and smoky" and is easy to miss because it's often the third or fourth ingredient rather than the first. The honey verdict and the debate behind it live on its own page. Plain mustard, French's or Dijon style, is reliably vegan: mustard seed, vinegar, water and turmeric contain nothing animal-derived. Honey mustard obviously fails on the same ingredient as BBQ glaze, and a small number of specialty mustards use white wine, which can involve animal-derived fining agents such as isinglass or casein during production even though none of them remain in the finished bottle.

Hot sauces built from chiles, vinegar, garlic and salt, the Louisiana-style and most Asian chile sauces, are vegan on their ingredient list. Huy Fong's Sriracha is the one that actually generates debate: its ingredient list contains nothing animal-derived, but the company has not published which sugar it uses or how that sugar is refined, which leaves the same bone-char uncertainty that applies to any other sweetened condiment. Online vegan checkers have circulated a claim that the company told a customer in writing that the sauce is not vegan for this reason, but that statement cannot be verified against anything the company has published, so it is not repeated here as fact.

Soy sauce is vegan: fermented soybeans, wheat, salt and water, with the umami coming from the same glutamate release that fish sauce and Worcestershire rely on, just generated by koji mold fermentation instead of fish autolysis. Fish sauce itself, made from salted, fermented anchovies or other small fish, is never vegan regardless of brand, and building a plant-based version that hits the same savoury notes in cooking is its own guide. Pesto's problem is Parmesan, made with animal rennet in its traditional Italian production, which puts classic basil pesto out of reach; the fix used in most vegan versions is nutritional yeast, deactivated Saccharomyces cerevisiae with a naturally savoury, faintly cheesy flavor from its own glutamate content, swapped in at roughly the same volume as the cheese it replaces.

Vinaigrettes made from oil, vinegar and mustard are vegan by default and rarely worth double-checking. Creamy dressings are where the category turns: ranch is built on buttermilk and often egg-based mayo, Caesar dressing is built specifically around anchovy paste and Parmesan, and any dressing labelled "creamy" or "ranch style" should be assumed dairy-based until the label says otherwise. The allergen statement is the fastest check here, since US and EU law both force milk, egg and fish onto that line whenever they're present, which means a ten-second glance at "Contains: milk, egg" tells you more than reading every ingredient.

The animal ingredient in a condiment tends to sit in the middle of the list, not the front, because it's doing flavour work rather than bulk: anchovy paste, egg yolk and honey rarely lead an ingredient list the way sugar or oil does. General label-reading technique has its own guide; what's specific to this aisle is that the allergen statement is a genuine shortcut for three of the big four culprits, egg, milk and fish, all mandatory disclosures in both the US and EU, so scanning that one line before the ingredient list catches most obvious failures in under five seconds. A "may contain" line is a different animal entirely: it's a manufacturer's warning about shared equipment for allergic reaction risk, not a disclosure of what's actually formulated into the product, and it tells a vegan reader nothing about intentional ingredients one way or the other.

US and EU labelling diverge in two ways that matter here. The US requires disclosure of nine major allergens, either inside the ingredient list or in a separate "Contains" line; the 2004 Food Allergen Labeling and Consumer Protection Act set the original eight, and the 2021 FASTER Act added sesame as the ninth, effective January 2023. EU Regulation 1169/2011 requires fourteen, adding mustard, celery, sulphites, lupin and molluscs, and mandates that they be visually emphasised, bolded or otherwise set apart, inside the ingredient list itself rather than only in a summary line. That means a European Caesar dressing has mustard and molluscs called out by law in a way a US one does not, and a US shopper relying purely on a "Contains" statement is reading a system with looser presentation rules than its EU counterpart.

This is the honest complication running underneath ketchup, BBQ sauce, mustard, sriracha and most sweetened condiments at once: refined cane sugar in the US is frequently decolorized by filtering it through bone char, made by incinerating cattle bones for roughly twelve hours above 700°C, and neither the FDA nor any US label requires that process to be disclosed anywhere on the package, because the char itself doesn't end up in the finished sugar. The full mechanics and which sugar types are affected are covered on the bone-char sugar page; the point for this aisle is that beet sugar is never bone-char filtered, organic cane sugar is guaranteed free of it under USDA organic rules, and a certified-vegan label is the only other reliable signal. Everything else, meaning any product that just says "sugar" with no organic or vegan certification, is genuinely unknowable from the label alone. A reader who wants certainty has to buy certified or accept the gap; there is no label-reading trick that closes it.

Condiments are unusually cheap to reproduce at home compared to most vegan substitutions, because the volumes are small and the base ingredients, oil, vinegar, mustard, tomato paste, are already vegan. A whisked aquafaba mayo or a cashew ranch base takes minutes and sidesteps every question on this page except the sugar one, which follows whatever sweetener is already in the pantry.