Is Polenta Gluten Free? The Answer and the Traps

Yes, polenta is gluten free: it’s cornmeal, and maize doesn’t have the gluten of wheat, barley and rye. But several supermarket polentas warn of traces of gluten, linked to the mill, and the word “semolina” used on its own often means wheat: you need to read the packet, not just the name.

Why polenta has no gluten

Polenta is first of all cornmeal (coarsely ground maize), and then the dish made from it, cooked slowly in water or milk. Maize is a cereal, but its main protein, zein, doesn’t trigger the coeliac reaction: we explain this in our article on corn. AFDIAG, the French coeliac association, lists maize among the naturally gluten-free cereals, and Coeliac UK mentions polenta by name.

Fine, medium or coarse grind, pre-cooked “quick” polenta or traditional polenta: as long as the only ingredient is maize, the recipe contains no gluten.

What’s still at risk

The mill

This is the main source of contamination. Maize is milled on equipment that often handles wheat, and a meal, like a flour, holds on to dust. A US study of 22 naturally gluten-free grains, seeds and flours bought without a “gluten free” label found 7 above 20 mg/kg (Thompson et al., 2010). Our article on contamination in quinoa, rice and corn explains this mechanism in detail.

The word “semolina”

Semolina on its own means durum wheat semolina, the kind used for couscous and pasta; in France, semoule, and in Italy, semola or semolino, are the same. Gnocchi alla romana, for example, are made from wheat semolina, not polenta. On a label, look for “corn” or “maize” spelled out. The Nutrixe scanner applies the same rule: a “semolina” whose origin isn’t specified is never treated as gluten free, and without any other clue it answers “Check the pack”.

Ready-made polenta

Polenta in a block ready for grilling, polenta with herbs, cheese or porcini, polenta mixes: every added ingredient needs reading. Some block polentas are produced in factories that handle gluten, and say so: one ready-to-use polenta sold in France states “allergens present in the factory: gluten, milk and egg”.

In restaurants

Grilled polenta may have been dusted with flour before going on the griddle, and fried polenta cooked in a shared fryer with breaded foods, as with chips. And creamy polenta is often served with a stew thickened with flour or made with catering stock. In northern Italy it’s an everyday side dish; our article on Italian food covers the other dishes.

Three packets, three answers

These three products are sold in France.

The same goes for the Marque Repère polenta (Turini), whose label states “traces of gluten”, and for La Vie Claire organic polenta, which mentions possible traces of gluten.

Photos and ingredient lists: Open Food Facts, a collaborative open-licence database, retrieved on 8 October 2026. Recipes change: the label on the packet in your hand is what counts.

The table

No particular risk	To check	Avoid or contains gluten
Polenta labelled “gluten free” or with the Crossed Grain	Polenta with no label at all	Polenta with a gluten traces warning
Polenta taragna labelled “gluten free”	Block, flavoured or cheese polenta	“Semolina” with no further detail (durum wheat)
	Grilled or fried polenta in restaurants	Gnocchi alla romana (wheat semolina)
	Loose polenta

How to choose

1. Look for “corn” or “maize” spelled out. A semolina with no stated origin is almost always wheat.
2. Look for the “gluten free” label. Commission Implementing Regulation (EU) No 828/2014 reserves it for products containing no more than 20 mg/kg of gluten; on polenta, it tells you the mill has been checked.
3. The Crossed Grain symbol adds an independent audit; see what each logo is worth.
4. Rule out gluten traces warnings. AFDIAG advises avoiding these products when in doubt; see our article on “may contain” warnings.

In short

For other staple foods: rice, buckwheat, cornstarch, and the list of foods with and without gluten.

Sources

• Commission Implementing Regulation (EU) No 828/2014 of 30 July 2014: the “gluten-free” claim is reserved for foods containing no more than 20 mg/kg.
• Regulation (EU) No 1169/2011 on the provision of food information to consumers, Annex II: cereals containing gluten are allergens that must be emphasised.
• AFDIAG, Lors de vos achats en magasin, afdiag.fr: maize among the naturally gluten-free cereals; products with a “may contain traces of…” warning and loose buying advised against.
• Coeliac UK, A guide to grains, November 2024: maize and polenta among naturally gluten-free foods; risk of flours milled alongside wheat, barley or rye.
• Thompson T., Lee A. R., Grace T. Gluten contamination of grains, seeds, and flours in the United States: a pilot study. Journal of the American Dietetic Association, 2010; 110(6): 937–940.
• Open Food Facts, product entries 4104420016569 (Alnatura Polenta), 3252971420319 (Alpina Savoie Polenta Tradition), 3600900021890 (Tipiak Polenta), 3564700853481 (Marque Repère Turini Polenta), 3266191105321 (La Vie Claire Polenta) and 8059070741223 (L’Italie des pâtes Polenta), consulted on 8 October 2026.