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Sauce

Foaming Sauce

A light, frothy sauce made from butter, sugar, hot water, and optional vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Sugar and vanilla are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 35,032 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓

Foaming Sauce

Ingredients

Directions

  1. Beat the butter and sugar together until frothy.

  2. Place the bowl in a pan of hot water.

  3. Add the hot water and vanilla, if using.

  4. Stir continuously in one direction until the mixture forms a very light foam.

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. Sugar + vanillatop 8% of all pairs
    Smell alikelow
    Cooked together35,032 recipes

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

  2. Butter + vanillatop 14% of all pairs
    Smell alikemoderate
    Cooked together20,050 recipes

    Shared aroma: guaiacol (smoky, sweet).

  3. Butter + sugartop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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

Butter
Adds richness and fat, giving the sauce a smooth, creamy mouthfeel.
Sugar
Sweetens the sauce and, when beaten with butter, helps trap air for a light foam.
Hot water
Adds moisture and warmth, helping the butter and sugar loosen into a foamable mixture.

The step that matters

Stir in one direction until a very light foam forms. Stirring steadily in one direction traps air evenly in the warm butter and sugar mixture. Stirring back and forth or too fast can deflate the foam or cause it to separate.

“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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