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Ingredient dictionary

Rye sourdough on a food label: it contains gluten

Rye sourdough is a kind of rye. It contains gluten, so the allergen labelling rules apply. Whether it is vegan depends on how it was made. Open Food Facts finds it in 1,454 products, most often in bread.

By Bravoora teamUpdated 13 October 2026Sources checked 13 October 20266 sourcesHow we check

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for a gluten-free profile

Rye sourdough=gluten

Does rye sourdough contain an allergen?

Yes. Rye sourdough is made from a cereal containing gluten: labels in the UK, Europe and the Gulf must declare it. In the US it is not a listed allergen, because US labels name wheat only.

Allergen	US	UK and Europe	Gulf
Cereals containing gluten	PartlyWheat only	RequiredWheat, rye, barley, oats, spelt, khorasan	RequiredWheat, barley, oats, rye, spelt

Read the gluten guide

Is rye sourdough vegan?

It depends on the make. Some kinds of rye sourdough are made with an animal product and a label rarely says which, so a vegan profile gets Heads up. It is vegetarian.

VeganHeads upSome kinds are made with an animal product, and a label rarely says which.

VegetarianFits youNot meat or fish.

Coeliac or gluten-freeNot for youIt is made from a cereal containing gluten.

A pack can differ from the usual recipe: the app reads the label in your hand.

What other names does rye sourdough have on a label?

On European labels it is “levain de seigle” in French, “Roggensauerteig” in German and “masa madre de centeno” in Spanish. The other 7 languages are listed below.

French: levain de seigle
German: Roggensauerteig, Sauerteig dunkel
Spanish: masa madre de centeno
Italian: pasta madre di segale
Dutch: roggezuurdesem, roggedesem
Polish: zakwas żytni
Swedish: rågsurdeg, surdeg av råg
Danish: rugsurdej
Finnish: ruistaikinanjuuri, ruisjuuri
Croatian: raženo kiselo tijesto

Which foods contain rye sourdough?

Open Food Facts lists rye sourdough or a more specific kind of it in the ingredients of 1,454 products, most often bread, sandwiches and pastries. Most of them are sold in France, Germany and Belgium.

Bread763
Sandwiches184
Pastries103
Pizzas, pies and quiches85
Savoury snacks30
Pasta, rice and flour13

Products with it, by country of sale: France 883 · Germany 97 · Belgium 92 · Netherlands 67.

Counted on 13 October 2026 from the Open Food Facts product database, which volunteers fill from real packs: it shows where rye sourdough turns up, not how much of the market it is.

What kind of ingredient is rye sourdough?

In the Open Food Facts ingredient tree, rye sourdough sits under rye and sourdough.

Kinds of rye sourdoughWhole rye sourdough Devitalised rye sourdough Natural rye sourdough Rye sourdough powderRye and wheat sourdough

Bravoora reads this ingredient for everyone you shop for: an allergy or intolerance, a vegan or vegetarian diet, a calorie or protein goal, and the labels on supplements and skincare too. Build a profile · For dietitians, doctors and trainers

Sources

An allergen is stated only when two of three checks agree: the Open Food Facts record, Bravoora’s label checker, and the ingredient’s own name or family (oat flour is oats, a cheese is milk). Every name where they disagree waits for a person to review it.

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

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