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Sauce

Mustard Sauce

A mustard-based sauce made with vinegar, butter, egg, sugar, and beef broth.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Mustard and vinegar are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 14,067 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Mustard Sauce

Ingredients

Directions

  1. Mix mustard and vinegar in a bowl.

  2. Add butter, egg, and sugar, stirring until combined.

  3. Gradually add the liquid from the boiled beef until the mixture reaches a creamy consistency.

  4. Heat the mixture gently, stirring as you would for melted butter.

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. Mustard + vinegartop 7% of all pairs
    Smell alikemoderate
    Cooked together14,067 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Vinegar + sugartop 15% of all pairs
    Smell alikemoderate
    Cooked together20,806 recipes

    Shared aroma: beta-damascenone (apple, rose).

  3. Butter + beeftop 16% of all pairs
    Smell alikemoderate
    Cooked together10,847 recipes

    Shared aroma: 2-furfurylthiol (coffee, roasted).

  4. Mustard + beeftop 17% of all pairs
    Smell alikemoderate
    Cooked together1,664 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  5. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

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

What each ingredient does

Egg
Emulsifies the butter and liquid, helping the sauce thicken into a creamy texture.
Butter
Adds fat and richness, giving the sauce a smooth, creamy mouthfeel.
Mustard
Provides the sharp, pungent flavour that defines the sauce.
Vinegar
Adds acidity that balances the richness of the butter and egg.

The step that matters

Heating the mixture gently. An egg-thickened sauce can curdle or scramble if overheated. Low, gentle heat with constant stirring lets the egg thicken the sauce smoothly while the butter stays emulsified.

Swap the mustard

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

  1. Capsicumfits about as well
  2. Mustardthe original
  3. Chivefits about as well
  4. Potatofits about as well

Fit is the average pairing score against vinegar, butter, egg, sugar, beef. 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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