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Dessert

Hard Sauce

Hard Sauce is a hard sugar glaze made from powdered sugar, butter, boiling water, salt, and vanilla extract.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 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 ↓

Hard Sauce

Ingredients

Directions

  1. In a bowl, combine the powdered sugar and butter, and chop together for one minute.

  2. Pour in the boiling water and beat the mixture vigorously.

  3. Add a dash of salt and the vanilla extract, mixing well.

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. Sugar + buttertop 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

Powdered sugar
Provides sweetness and bulk, forming the body of the sauce.
Butter
Adds fat and richness, giving the sauce a smooth, creamy mouthfeel.
Boiling water
Melts the butter and loosens the sugar into a smooth, spreadable texture.

The step that matters

Pour in the boiling water and beat vigorously. Hot water must be beaten in quickly so the butter emulsifies and the sugar dissolves evenly. Without vigorous beating, the sauce can stay grainy or 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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