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Sauce

Soubise Sauce

A French sauce of stewed onions in butter, thickened béchamel, salt, and sugar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Onion and butter are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 42,912 recipes. Both carry decanal, which smells soap, orange peel. The science ↓

Soubise Sauce

Ingredients

Directions

  1. Stew the minced onions in butter until softened and flavorful.

  2. Add the thickened Bechamel to the onions.

  3. Season with coarse sea salt and powdered sugar.

  4. Cook gently for 30 minutes, stirring occasionally.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

  1. Onion + buttertop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

  2. Sugar + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

  3. Onion + sugartop 36% of all pairs
    Smell alikelow
    Cooked together15,747 recipes

    Shared aroma: guaiacol (smoky, sweet).

Onion and sugar barely smell alike, yet cooks put them together in 15,747 recipes: they work on texture and structure more than aroma.

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Onions
Form the bulk of the sauce, giving body and sweet savory flavor as they soften.
Thickened bechamel
Adds creamy body and helps the sauce hold together and coat food.
Butter
Softens the onions gently and adds richness and flavor to the sauce.

The step that matters

Stewing the onions until softened. Cooking onions slowly in butter lets their sugars brown gently and mellow, building sweetness. Rushing with high heat can scorch them and leave a bitter taste.

Swap the onion

How well each one fits the dish's main ingredients (sugar, butter):

  1. Sweet potatofits better
  2. Leekfits better
  3. Potatofits better
  4. Onionthe original

Fit is the average pairing score against sugar, butter. Candidates are from the same food group and used in at least 100 recipes.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.

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