Rye flour: allergens and what’s inside

Which allergens are in rye flour?

Of 68 packs of rye flour whose ingredient list Open Food Facts reads in full, 100% list gluten, 3% list milk, 1% list egg and 1% list lupin. Another 24% carry a “may contain” line for soy, 21% for sesame and 13% for lupin. Recipes differ from pack to pack, so the label in your hand is the one that counts.

Not for you when most of these packs list the allergen, Heads up when fewer do or only a “may contain” line names it. In the app, a profile gets Not for you on a pack that lists the allergen and Heads up on one whose “may contain” line names it: it reads the pack in your hand, not these counts.

Read the gluten guide

What is rye flour usually made of?

The ingredients most packs of rye flour list, with the share of packs that list each: rye flour (63%), rye (35%) and wholemeal rye flour (16%).

• Rye flour63%
• Rye35%
• Wholemeal rye flour16%

Packs in Open Food Facts, by country of sale: France 97 · Germany 62 · Spain 11 · Switzerland 8.

Counted on 13 October 2026 from the Open Food Facts product database, which volunteers fill from real packs: it shows what these packs list, not every recipe for rye flour.

Calories and nutrients

Not shown here. Open Food Facts records calories and nutrients per 100 g or per 100 ml without saying which, so a figure for all these packs together could mislead. The pack you buy prints its own, and that is the figure to log.

What kind of food is rye flour?

In the Open Food Facts categories, rye flour is a kind of cereal flour.

What else is rye flour called?

French

Farines de seigle

German

Roggenmehle

Spanish

Harinas de centeno

Italian

Farine di segale

Dutch

Roggemelen

Portuguese

Farinha de centeio, farinha de centeio

Polish

Mąki żytnie, mąka żytnia

Sources

Every share is counted over the packs whose ingredient list Open Food Facts reads in full. A pack lists an allergen when Open Food Facts’ allergen field names it, or when one of its ingredients stands for it by the same two-of-three checks as the ingredient dictionary (tahini is sesame, a cheese is milk). A “may contain” line counts only for an allergen the pack does not list.

1. Open Food Facts: product database, 4,535,553 products, read 13 October 2026, ODbL
2. Open Food Facts: categories and ingredients taxonomies (names, kinds, allergens), ODbL
3. Open Food Facts: Rye flour

Contains information from Open Food Facts, which is made available here under the Open Database License (ODbL). Read the licence · Download this guide’s data · How we check