Ingredient guide
Most packaged food is easy to judge. A handful of ingredients are not, and the same few names come up again and again: gelatin, carmine, rennet, whey, L-cysteine, and mono- and diglycerides. Each one can be made from a plant or from an animal, and the ingredient list almost never says which. This guide explains what each one is, why the label leaves it open, and what actually resolves the question.
Why one word can mean two different things
Food labelling law is built around what an ingredient is, not where it came from. Gelatin is gelatin whether it was made from pork hide or fish skin. E471 is E471 whether the fat was palm or tallow. The rules do their job, they are just answering a different question from the one you are asking in the aisle.
That gap is the reason PlatePal returns four verdict states rather than a yes or a no. When the label genuinely does not resolve the question, saying so is the honest answer, and it is the one that keeps you safe.
The ingredients
- GelatinE441
A collagen protein set from animal hide and bone. Whether it fits your diet depends entirely on which animal it came from, and labels rarely say.
- CarmineE120
A red colour made from cochineal insects. It must be named on US labels, which makes it one of the easier additives to spot.
- Rennet
The enzyme that curdles milk into cheese. It can be animal, microbial, or fermentation-produced, and Enzymes on a label tells you nothing about which.
- Whey
The liquid left after milk curdles into cheese. It is always a milk allergen, and it inherits whichever coagulant made the cheese.
- L-cysteineE920
An amino acid used to soften dough. It can be synthetic, fermented, or extracted from feathers or hair, and bread labels do not say which.
- Mono- and diglyceridesE471
Fat-based emulsifiers that keep oil and water mixed. They can come from plant or animal fat, and the label almost never says which.
How to read the verdicts
| Verdict | What it means |
|---|---|
| Usually fine | The ingredient is compatible with that profile in the great majority of cases. |
| Depends on the source | The answer turns on a source or process the label does not disclose. This is the most common state, and it is not a failure of the scan. |
| Usually avoided | Most people following that profile avoid it, though authorities and definitions differ. |
| Not suitable | Incompatible with that profile under any common reading. |
This guide is not a ruling
PlatePal is a screening tool. It flags ingredients worth a second look, and it tells you when it cannot be sure. It does not issue religious or medical rulings, and nothing here replaces your certifying authority, your rabbi or imam, or your allergist. Where it matters, verify the label yourself.
Where this fits
These pages explain the ingredients. The scanner pages explain the checks: halal, kosher, and the free allergen scanner. If you are holding a label with a code rather than a name on it, the E number checker looks the code up and tells you what it is made from. For the complete list of what PlatePal screens, see supported diets and allergens.