How to Read a Supplier Ingredient Label for Allergens
Your allergen disclosure is only as accurate as your understanding of what's in the products you buy. Here's how to read vendor labels and catch what matters.
The "Contains" Statement
Under FDA rules (FALCPA), packaged foods must declare major allergens either within the ingredient list (in parentheses) or in a separate "Contains:" statement immediately after the ingredient list.
Example:
Ingredients: Enriched flour (wheat flour, niacin, iron, thiamine, riboflavin, folic acid), water, sugar, soybean oil, eggs, yeast, salt, sesame seeds.
Contains: Wheat, Soybeans, Eggs, Sesame.
The "Contains" statement is your fastest reference. Look for it first — it tells you exactly which of the 9 major allergens are in the product without having to parse the full ingredient list.
Allergens Within the Ingredient List
Some products declare allergens inline using parentheses:
...natural flavor, casein (milk), lecithin (soy)...
Watch for allergen names you might not immediately recognize:
- Milk: casein, whey, lactose, ghee, curds
- Eggs: albumin, lysozyme, globulin, ovalbumin
- Wheat: semolina, spelt, durum, kamut, farina, couscous
- Soy: lecithin, tofu, tempeh, edamame, miso
- Tree nuts: praline, marzipan, nougat, gianduja
"May Contain" and Advisory Statements
You'll often see statements like:
- "May contain traces of peanuts"
- "Manufactured in a facility that processes tree nuts"
- "Made on shared equipment with milk and eggs"
These are voluntary cross-contact warnings — not required by law. They mean the allergen is NOT an intentional ingredient but might be present due to shared manufacturing equipment.
Under SB-68, you are required to disclose intentional ingredients, not cross-contact risks. So "may contain peanuts" does not mean you must list peanuts for that menu item. However, be aware that the risk exists — and consider noting general cross-contact risks separately for your most sensitive customers.
When Labels Are Missing or Unclear
Not every product you receive will have a clear consumer-facing label — bulk items, restaurant-supply packaging, and imported products may lack proper allergen declarations. In these cases:
- Check the spec sheet — Ask your distributor for the product specification sheet, which should list all ingredients and allergens.
- Call the manufacturer — If the label is ambiguous, call the manufacturer's customer service line and ask directly about allergen content.
- Check online — Many restaurant-supply products have full ingredient lists on the manufacturer's website.
- When in doubt, disclose — If you can't confirm an allergen is absent, it's safer to include it in your disclosure than to omit it.
Formulations Change Without Notice
A critical mistake: assuming a product's ingredients never change. Manufacturers reformulate products regularly — adding sesame flour for labeling simplification, switching from butter to margarine (removing milk but adding soy), or changing thickening agents.
Best practice: re-check labels every time you receive a new case, especially after switching distributors or during supply chain disruptions when substitutions are common.
Let AI Help Cross-Reference
MenuComply identifies likely allergens based on common recipe compositions — catching things like "soy sauce contains wheat" and "Caesar dressing contains fish" that you might miss when reading individual labels. It's a starting point you then verify against your actual supplier labels.