Plenty of everyday products contain slaughter-derived ingredients without making it obvious — gelatine in sweets, animal rennet in cheese, cochineal colour, or fish-derived omega-3.
PickEat reads the label and flags these, so vegetarian shopping is quick and certain.
Most traditional Parmesan uses animal rennet, and classic Worcestershire sauce and many Caesar dressings contain anchovies — non-vegetarian in plain sight.
What 'vegetarian' rules out — and the grey areas
A vegetarian diet excludes meat, poultry and fish, but keeps eggs and dairy. That sounds simple until you reach the grey areas: ingredients that come from animal slaughter without containing any obvious 'meat'. These are where well-meaning vegetarians get caught out, because nothing on the front of the pack hints at them.
The issue is that food manufacturing uses animal by-products as functional ingredients — to set, clarify, colour or enrich. They're listed accurately, but in technical language that's easy to skim past when you're not specifically hunting for it.
Slaughter-derived ingredients you'd never guess
Gelatine is the big one — made from animal collagen and used to set sweets, marshmallows, mousses and some yoghurts. Cochineal or carmine (E120) is a red colour from insects. Isinglass, from fish, clarifies some beers and wines, and certain omega-3 enrichments come from fish oil.
Then there are the savoury surprises: lard and suet in some pastries and baked goods, anchovies in classic Worcestershire sauce and many Caesar dressings, and rennet in cheese. Individually rare, collectively common enough that a vegetarian who never checks will eventually eat something they didn't intend to.
Cheese is the classic trap
Traditional cheese is set using rennet, an enzyme that often comes from the stomach lining of slaughtered calves. Many cheeses now use microbial or 'vegetable' rennet instead — but the label doesn't always make it obvious, and 'rennet' alone doesn't tell you the source.
For a vegetarian who eats dairy, this is the single most common blind spot. PickEat flags animal rennet so you can choose a vegetarian-set cheese with confidence, instead of assuming all cheese is automatically fine.
Quick checks that keep you covered
The reassuring news is that most vegetarian shopping is straightforward — it's a handful of recurring ingredients that cause nearly all the trouble. Once you know them, you mostly just need to confirm they're absent.
A scanner does that confirming for you. Scan, get a clear vegetarian verdict, and see the exact ingredient if something doesn't pass — so you can shop on autopilot and only slow down when there's an actual reason to.
Hidden non-veg ingredients PickEat flags
- ✕Gelatine and animal-derived collagen
- ✕Animal rennet in cheese
- ✕Cochineal / carmine (E120)
- ✕Fish-derived omega-3 and isinglass
- ✕Lard and other animal fats
Vegetarian-friendly
- ✓Products with a vegetarian-society mark
- ✓Vegetable rennet cheeses
- ✓Plant-based and clearly labelled meat-free options
How PickEat helps vegetarians
- 1Set your profile to vegetarian when you start.
- 2Scan the barcode or photograph the ingredient list.
- 3PickEat flags any slaughter-derived ingredient — gelatine, animal rennet, cochineal — and names it.
- 4Swap to a vegetarian-friendly alternative in a tap when needed.
Frequently asked questions
Can PickEat tell me if a food is vegetarian?+
Yes. PickEat scans for slaughter-derived ingredients such as gelatine, animal rennet and cochineal, and tells you whether a product is suitable for vegetarians.
Does it know about animal rennet in cheese?+
Yes — it flags animal rennet so you can choose vegetable-rennet cheeses.
Does it catch gelatine in sweets and desserts?+
Yes — gelatine is one of the most common hidden non-vegetarian ingredients, and PickEat flags it in sweets, marshmallows, mousses and some yoghurts.
What's the difference between the vegetarian and vegan check?+
The vegetarian check allows eggs and dairy and only flags slaughter-derived ingredients; the vegan check additionally flags all animal products like milk, eggs and honey.
Is it free?+
Yes, scanning is free on iOS and Android.
Sources & further reading
We check our content against guidance from recognised health and nutrition organisations.