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Béchamel sauce

Béchamel sauce is a classic white sauce made from a roux of butter and flour mixed with milk, usually seasoned with salt, pepper, and nutmeg.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Béchamel sauce is a classic white sauce made from a roux of butter and flour mixed with milk, usually seasoned with salt, pepper, and nutmeg. It is considered one of the French mother sauces and serves as a base for many other sauces and dishes.

Origin and classification

Béchamel is a French sauce traditionally classified as one of the classic mother sauces. Some sources describe its modern form as codified in the 17th century and widely adopted in European cooking.

Preparation

The basic method is to make a roux with butter and flour, then add milk gradually while stirring until smooth and thick. Seasoning is typically added near the end, often including salt, white pepper, and nutmeg.

Culinary uses

Béchamel is used as a sauce on its own and as a foundation for other preparations. Common applications include lasagne, cannelloni, croquettes, gratins, vegetables, fish, poultry, and creamy soups.

Béchamel differs from cream-based sauces such as Alfredo, which rely more heavily on dairy fat and cheese. By contrast, béchamel is thickened primarily with a flour-and-butter roux and usually has a milder milk-based flavour.

Key facts

  • Béchamel is made by cooking flour and fat into a roux, then whisking in milk until thickened.
  • It is also called salsa blanca or white sauce in Spanish-language sources.
  • It is widely used as a base for other sauces and in dishes such as lasagne, croquettes, cannelloni, vegetables, and baked pasta.
  • The sauce thickens because the roux absorbs and stabilizes the milk as it cooks.
  • Grains can be reduced by adding milk gradually and whisking continuously.
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Canadian context

Béchamel is common in Canadian home cooking and restaurant dishes influenced by French and European cuisine, especially in lasagne, croquettes, gratins, and casseroles.

Frequently asked questions

What is bechamel sauce?
Béchamel is a smooth white sauce made from a roux of butter and flour combined with milk, usually seasoned lightly with salt, pepper, and nutmeg.
How to make bechamel sauce?
Melt butter, stir in flour to make a roux, then slowly whisk in milk over low heat until the sauce is smooth and thick.
What is the difference between bechamel and alfredo?
Béchamel is thickened with a roux of flour and butter plus milk, while Alfredo is typically a cheese- and butter-heavy pasta sauce with no standard roux base. Béchamel is generally milder and used as a base sauce.
What is bechamel used for?
It is used for lasagne, cannelloni, croquettes, gratins, baked vegetables, creamy soups, and as a base for other sauces.
How to thicken bechamel sauce?
Let it cook longer so the roux fully hydrates and the sauce reduces, or use a bit more roux in the next batch. Adding milk more slowly and whisking constantly also helps achieve a thicker, smoother sauce.

References

  1. Wikipedia (Spanish)https://es.wikipedia.org/wiki/Bechamel
    Supports: Definition as a white sauce made from roux and milk; mother sauce classification; ingredients and seasoning.
  2. Central Lechera Asturianahttps://www.centrallecheraasturiana.es/como-surgio-la-salsa-bechamel-y-que-aplicaciones-tiene/
    Supports: Basic recipe, roux method, and common culinary applications.
  3. Naturarlahttps://www.naturarla.es/alimentacion/todo-sobre-la-salsa-bechamel/
    Supports: Mother sauce status, preparation method, and uses in croquettes, cannelloni, and creamy dishes.
  4. La Vanguardiahttps://www.lavanguardia.com/comer/recetas/20180814/451317262470/receta-salsa-bechamel.html
    Supports: Historical attribution, ingredients, and common dish uses.
  5. Unilever Food Solutionshttps://www.unileverfoodsolutions.com.mx/tendencias/knorrprofessional/arte_de_cocinar/que-es-la-salsa-bechamel.html
    Supports: Three main ingredients, roux method, whisking, seasoning, and uses.
  6. La Vanguardiahttps://www.lavanguardia.com/comer/tendencias/20190509/462100078841/trucos-bechamel-como-hacer-errores-receta-salsa.html
    Supports: Thickness variation, roux method, milk addition, and troubleshooting grumps/thickening.
  7. Directo al Paladarhttps://www.directoalpaladar.com/curso-de-cocina/salsa-bechamel-receta-definitiva-siempre-te-quede-perfecta
    Supports: Grain reduction by whisking and optional blending if lumps form.
  8. Lecturashttps://www.lecturas.com/recetas/escuela-de-cocina/5-salsas-derivadas-clasica-bechamel-e-ideas-para-crear-tu-propia-version_10241
    Supports: Uses in croquettes, lasagne, cannelloni, and general versatility.