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Boiled Dressing

A thickened sauce made with salt, mustard, cayenne, sugar, egg, milk, butter, and vinegar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Boiled Dressing

Ingredients

Directions

  1. Mix the salt, mustard, cayenne, and sugar together until well blended.

  2. Add the slightly beaten egg and the hot milk gradually.

  3. Stir in the vinegar and butter.

  4. Cook over hot water until thickened, stirring constantly.

  5. If the mixture curdles, place the upper part of the boiler in a pan of cold water.

  6. Beat until smooth.

  7. Strain the dressing before serving.

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. Milk + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

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

    Shared aroma: isobutyraldehyde (malty, green).

  3. Mustard + peppertop 9% of all pairs
    Smell alikemoderate
    Cooked together15,430 recipes

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

  4. Pepper + vinegartop 14% of all pairs
    Smell alikemoderate
    Cooked together27,814 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

  5. Sugar + vinegartop 15% of all pairs
    Smell alikemoderate
    Cooked together20,806 recipes

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

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

What each ingredient does

Egg
Thickens the dressing as it cooks and sets it into a smooth, creamy texture.
Milk
Adds moisture and richness, diluting the egg so it cooks gently into a smooth sauce.
Vinegar
Adds sharp acidity that balances the richness of the egg and butter.
Butter
Adds fat for a rounder, smoother mouthfeel in the finished dressing.
Mustard
Adds sharp flavour and aroma that complements the vinegar and egg.

The step that matters

Cook over hot water, stirring constantly. Egg proteins set at a fairly low temperature and can scramble or curdle if the heat is too high or uneven. Gentle indirect heat and constant stirring keep the custard smooth, and cooling the pan if it curdles helps rescue it.

Swap the mustard

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

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

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