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Sauce

Hard Sauce

A thick vanilla sauce made by creaming butter, sugar, milk, and vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Vanilla and milk are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓

Hard Sauce

Oven, in the book's wordsA slow oven

Ingredients

Directions

  1. Cream the butter until smooth.

  2. Gradually add sugar while continuing to beat.

  3. Add milk drop by drop and beat until very light.

  4. Stir in vanilla flavoring.

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. Vanilla + milktop 5% of all pairs
    Smell alikemoderate
    Cooked together19,187 recipes

    Shared aroma: ethyl caproate (fruity, apple peel).

  2. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

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

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

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

  4. Vanilla + buttertop 14% of all pairs
    Smell alikemoderate
    Cooked together20,050 recipes

    Shared aroma: guaiacol (smoky, sweet).

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

    Shared aroma: guaiacol (smoky, sweet).

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
Adds fat and richness, and creaming it traps air that makes the sauce light.
Sugar
Sweetens the sauce and helps aerate the creamed butter as it dissolves.
Milk
Loosens the mixture and adds moisture so it becomes smooth and light.
Vanilla
Provides the main aroma and flavor of the sauce.

The step that matters

Add milk drop by drop and beat until very light. Adding liquid slowly lets the butter and sugar emulsify. Adding it too fast can cause the mixture to separate or curdle, leaving a greasy, grainy sauce instead of a smooth, light one.

“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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