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Dessert

Hot Chocolate Sauce

A thickened chocolate sauce made with boiling water, salt, chocolate, sugar, and vanilla.

From an old cookbook · modernised transcription
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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 ↓

Hot Chocolate Sauce

Ingredients

Directions

Make the sauce

  1. Combine boiling water, salt, chocolate, and sugar in a saucepan.

  2. Cook slowly until the mixture thickens to the consistency of maple syrup.

Finish and serve

  1. Just before serving, stir in the 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).

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 chocolate flavour and some body as the sauce thickens.
Sugar
Adds sweetness and helps the sauce thicken into a syrupy texture.

The step that matters

Cook slowly until it thickens. Gentle heat lets the sugar and chocolate dissolve fully and thicken gradually. Cooking too hard can scorch the sugar or chocolate, and cooking too briefly leaves the sauce thin.

“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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