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Dessert

Foamy Sauce

A light, airy sauce made from butter, powdered sugar, egg whites, heavy cream, and vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Butter and cream are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓

Foamy Sauce

Ingredients

Directions

Make the base

  1. Cream the butter in a bowl.

  2. Gradually add the powdered sugar while continuing to beat.

  3. Place the bowl over hot water and beat the mixture.

Add the eggs and cool

  1. Add the beaten egg whites gradually until the sauce reaches the consistency of heavy cream.

  2. Remove from heat and let cool.

  3. Flavor with vanilla.

Finish and serve

  1. Fold in the whipped heavy cream just 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. Butter + creamtop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

  2. Vanilla + sugartop 8% of all pairs
    Smell alikelow
    Cooked together35,032 recipes

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

  3. Sugar + creamtop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

    Shared aroma: 2,3-butanedione (butter, sweet).

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

    Shared aroma: guaiacol (smoky, sweet).

  5. Vanilla + creamtop 15% of all pairs
    Smell alikelow
    Cooked together12,301 recipes

    Shared aroma: 2-nonanone (fruity, floral).

Vanilla and sugar 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
Provides richness and a smooth, creamy body as the fat base of the sauce.
Powdered sugar
Adds sweetness and dissolves easily into the butter for a smooth texture.
Egg whites
Whipped proteins trap air and thicken the sauce into a light, foamy texture.
Heavy cream
Folded in whipped at the end to add lightness and a soft, airy texture.
Vanilla extract
Adds a warm aromatic flavor that rounds out the buttery sweetness.

The step that matters

Adding the beaten egg whites. Egg proteins set when heated, so the whites can scramble over hot water if added too fast. Adding them gradually while beating keeps the sauce smooth and foamy.

“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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