How to check if a packaged food is halal

1. Look for a certification mark on the pack in your hand

A halal certification mark carries the name or logo of the body that certified the product. It is the strongest sign a pack can give, and it is the only one that covers what a label cannot show, such as how meat was slaughtered.

A certification belongs to a product, not to a brand. Tillamook, for example, says that the majority of its cheeses are halal certified and that you should check the packaging for the symbol, while its ice cream, yogurt, sour cream, butter and cream cheese spreads have no halal certification. A brand's reputation for one product tells you nothing about the next one on the shelf.

Read the mark on the pack itself rather than on a website or an old photo. Recipes and factories change, and the same product sold in another country can be made elsewhere. The word "halal" printed without a certifier's name is the manufacturer's own claim, not a certification. If you follow a particular certifier or scholar, check that the mark is one they accept.

2. Read the ingredient list for what rules it out

• Pork and anything made from it: pork, lard, bacon, ham.
• Alcohol as an ingredient: wine, beer, rum, liqueur, and wine in sauces or marinades.
• Gelatin, unless the source is named. About 80 percent of the edible gelatin made in Europe comes from pork skins, according to the European gelatin manufacturers' association. A label that says only "gelatin" does not tell you which kind it is. Fish gelatin, or beef gelatin from a certified source, is a different case.
• Carmine (E120, cochineal): a red colour made from insects, which many Muslims avoid.
• Meat and poultry without a certification mark. The list can say "chicken" or "beef", but not how the animal was slaughtered.

3. Look closer at the ingredients a label does not explain

Some ingredients can come from a plant or an animal, and US labelling rules do not require the label to say which. These are the ones to watch.

• Mono- and diglycerides (E471). The US definition says they are made from fats or oils "derived from edible sources". It does not say plant or animal, and the label usually does not either. "Vegetable mono- and diglycerides" answers the question; the plain name does not.
• Natural flavor. Under US rules, a natural flavor can be extracted from a plant, but also from meat, seafood, poultry, eggs or dairy products. The words "natural flavor" alone do not tell you which.
• Vanilla extract. In the US, vanilla extract must contain at least 35 percent ethyl alcohol by volume. Scholars differ on whether alcohol used this way, in the small amount that ends up in a food, is acceptable, so this one is your call.
• Enzymes in cheese. The enzyme that sets cheese can be rennet taken from the stomachs of calves, kids or lambs, or chymosin made by fermentation. A label that says only "enzymes" does not tell you which.
• What is not on the label at all. US rules let a manufacturer leave out processing aids that are removed before packing or remain only at insignificant levels. A short, clean ingredient list cannot rule them out; only the manufacturer or a certifier can.

Outside the US, many of these appear as E-numbers. Halal Food AI checks additives against a table of 316 E-numbers, built on a published listing from Singapore's Islamic council (MUIS) and adjusted where other authorities differ, and marks the ones whose source is uncertain as Suspect.

4. When it is still unclear, ask the manufacturer

Use the contact details on the pack or on the company's website. Ask about the specific ingredient rather than "is it halal": the source of the gelatin, the emulsifiers, the enzymes or the natural flavor, whether the product is certified and by whom, and whether the answer holds for the country where you bought it. Note the date: an answer describes a recipe at that time.

What "vegetarian" does and does not tell you

A vegetarian label should mean no meat, no animal gelatin and no animal rennet. It does not rule out alcohol: vanilla extract, for one, is vegetarian. Nor is it a certification. Tillamook's ice creams are a clear example: the company says all but one are vegetarian, and none is halal certified.

Where an app helps, and where it cannot

An app like Halal Food AI does steps 2 and 3 quickly and the same way every time: it reads the ingredient list, flags pork, alcohol, gelatin, carmine and ingredients of unstated source, and lists the reasons. A printed halal claim counts in a product's favour, but pork, alcohol or carmine still override it. If a barcode is not in the database, you can photograph the ingredient list instead.

It does not replace step 1 or step 4. The app does not recognise certification logos, and no ingredient check can see slaughter, processing aids or shared factory lines. Read its result as a check of the ingredient list, and the mark on the pack as the certification. How the app decides explains the rules in full.

Sources

• Tillamook, "Are any of your products halal?" (company FAQ).
• Gelatine Manufacturers of Europe, "Manufacturing": raw materials of edible gelatine made in Europe.
• US Code of Federal Regulations, 21 CFR 184.1505 (mono- and diglycerides), 101.22(a)(3) (natural flavor), 169.175 (vanilla extract), 184.1685 (rennet and chymosin) and 101.100(a)(3) (incidental additives and processing aids).