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Dessert

Hot Chocolate Sauce

A warm chocolate sauce made by boiling chocolate with water, sugar, Karo syrup, 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 ↓

Hot Chocolate Sauce

Ingredients

Directions

Make the sauce

  1. Boil the chocolate in water until completely dissolved.

  2. Add the sugar and Karo Syrup, stirring until well combined.

  3. Flavor with vanilla extract.

Serve

  1. Serve warm over ice cream.

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 + syruptop 6% of all pairs
    Smell alikestrong
    Cooked together5,842 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

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

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

  4. Syrup + vanillatop 12% of all pairs
    Smell alikelow
    Cooked together1,855 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  5. 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 flavor and richness to the sauce.
Sugar
Adds sweetness and body, thickening the sauce as it dissolves.
Karo syrup
Keeps the sauce smooth and helps prevent sugar from turning grainy.

The step that matters

Dissolve the chocolate completely in the boiling water. Chocolate that is not fully dissolved before the sugar goes in stays lumpy or grainy. Melting it fully into the hot water gives the sauce an even, glossy texture.

“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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