Is parmesan cheese gluten-free?

Real parmesan is made from milk, salt and rennet only. The gluten risk comes from grated blends and anti-caking agents, not the cheese.

Why this answer

• Protected Parmigiano Reggiano has a legally fixed recipe: raw cow's milk, salt and calf rennet. No grain is used.
• Aging and the enzymes used in production do not introduce gluten.
• Shelf-stable grated 'parmesan' often contains cellulose or starch to stop clumping; cellulose is gluten-free but wheat starch would be declared as an allergen.
• Breaded or coated parmesan products, such as parmesan crisps with flour, are a different matter and should be read individually.

What to look for on the label

• Cow's milk
• Salt
• Rennet
• Anti-caking agents in grated tubs

How this answer was reached

Every entry in this library starts with the manufacturer's published ingredient statement, then traces each questionable component back to its source — grain, dairy, plant, or synthetic — because gluten and FODMAP content usually depends on how an ingredient is produced rather than on its name. Where production methods differ by country or brand, we say so instead of forcing a single verdict.

Labelling rules matter as much as recipes. In the United States, a product labelled gluten-free must test below 20 parts per million, and wheat must be declared as an allergen. FODMAP tolerance is different again: it is portion-dependent, so a food can be fine in one serving size and a problem in another.

This page is general guidance for everyday shopping, not medical advice for coeliac disease or IBS — formulations change, so confirm with the current pack. For anything not covered here, scanning the barcode with Foodsage gives you the same analysis in seconds, and you can browse the full gluten-free answer library for related ingredients.