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Sauce

Golden Foam Sauce

A custard-like sauce made from eggs, sugar, boiling water, lemon and orange juice.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Lemon and orange match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Golden Foam Sauce

Ingredients

Directions

  1. Beat the sugar and eggs together until well combined.

  2. Place the basin over a pan of steaming water.

  3. Slowly add the boiling water while continuously beating the mixture.

  4. Once the sauce is thick and foamy, remove it from the heat.

  5. Stir in the strained fruit juices.

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. Lemon + orangetop 1% of all pairs
    Smell alikestrong
    Cooked together10,634 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  2. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

    Shared aroma: 2-nonenal (fatty, green).

  3. Egg + lemontop 19% of all pairs
    Smell alikelow
    Cooked together44,316 recipes

    Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).

  4. Sugar + orangetop 20% of all pairs
    Smell alikelow
    Cooked together19,212 recipes

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

  5. Egg + sugartop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

    Shared aroma: 2-nonenal (fatty, green).

Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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

Eggs
Set and thicken the sauce as they heat, creating a light, foamy structure.
Granulated sugar
Sweetens the sauce and helps stabilise the beaten eggs.
Lemon juice
Adds acidity that brightens the flavour and balances the sweetness.
Orange juice
Adds fruity sweetness and aroma to the sauce.

The step that matters

Adding the boiling water. Pour the water slowly while beating continuously. Adding it too fast or letting the mixture stop moving can scramble the eggs or stop the sauce from thickening evenly.

Swap the orange

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

  1. Orangethe original
  2. Vanillafits about as well
  3. Limefits less well
  4. Raisinfits less well

Fit is the average pairing score against egg, sugar, lemon. 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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