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Dessert

Chocolate Icing

A sweet glaze made from sugar, water, chocolate, and vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 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 Icing

Ingredients

Directions

  1. In a saucepan, combine the sugar and cold water.

  2. Boil over medium‑high heat until the mixture resembles strong glue when pressed between your fingers.

  3. Remove from heat and stir in the grated chocolate until fully melted.

  4. Add vanilla extract to taste and mix 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. 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. Sugar + chocolatetop 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

Fine loaf sugar
Dissolves and cooks into a syrup that sets the icing and adds sweetness.
Grated chocolate
Provides the chocolate flavour and, melted into the hot syrup, gives the icing its body.

The step that matters

Boiling to the glue stage. Sugar syrup sets as it cools based on how far its water has evaporated. Boiling too little leaves the icing runny; boiling too long makes it hard and grainy once it cools.

“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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