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Dessert

Chocolate Frosting

A simple chocolate frosting made by melting chocolate, adding butter and water, then sweetening with confectioners' sugar and vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Chocolate and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 10,020 recipes. Both carry sotolon, which smells curry, maple. The science ↓

Chocolate Frosting

Ingredients

Directions

  1. Melt chocolate over boiling water.

  2. Add butter and hot water.

  3. Cool the mixture.

  4. Add confectioners' sugar until the frosting reaches the right consistency to spread.

  5. Flavor with vanilla.

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. Chocolate + vanillatop 5% of all pairs
    Smell alikemoderate
    Cooked together10,020 recipes

    Shared aroma: sotolon (curry, maple).

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

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

  3. Chocolate + sugartop 13% of all pairs
    Smell alikemoderate
    Cooked together15,404 recipes

    Shared aroma: guaiacol (smoky, sweet).

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

    Shared aroma: guaiacol (smoky, sweet).

  5. Chocolate + buttertop 16% of all pairs
    Smell alikemoderate
    Cooked together10,543 recipes

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

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

Chocolate
Provides the main flavor and, as it cools, the firm body of the frosting.
Butter
Adds fat that makes the frosting smooth and rich on the palate.
Confectioners' sugar
Sweetens the frosting and thickens it as it dissolves into the liquid.
Hot water
Loosens the melted chocolate and butter so they blend into a smooth mixture.

The step that matters

Adding the sugar. Confectioners' sugar stiffens the frosting as it dissolves into the liquid, so add it gradually and stop once it spreads easily. Adding too much at once makes it stiff and hard to spread.

“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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