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Hot Chocolate Sauce for Ice Cream

A hot chocolate sauce made by boiling sugar and water, adding cocoa dissolved in boiling syrup, and seasoning with vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Cocoa and vanilla work together. They rank in the top 4% of all ingredient pairs, and cooks put them together in 357 recipes. Both carry sotolon, which smells curry, maple. The science ↓

Hot Chocolate Sauce for Ice Cream

Ingredients

Directions

Make the syrup

  1. Combine the sugar and hot water in a saucepan.

  2. Boil until it forms a hair-like thread.

Add the cocoa and finish

  1. Dissolve the cocoa in 3 tablespoons of the boiling syrup.

  2. Add the cocoa mixture to the saucepan.

  3. Boil until it thickens.

  4. Add vanilla to taste.

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. Cocoa + vanillatop 4% of all pairs
    Smell alikemoderate
    Cooked together357 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. Sugar + cocoatop 27% of all pairs
    Smell alikelow
    Cooked together956 recipes

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

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

Sugar
Forms a syrup that gives the sauce its body and sweetness.
Cocoa
Supplies the chocolate flavor and color of the sauce.
Hot water
Dissolves the sugar so it can form a syrup.

The step that matters

Boil until it forms a hair-like thread. Sugar syrup must reach the right concentration to thicken properly. Boiling too briefly leaves the sauce thin, while overcooking makes it stiff and grainy as it cools.

Swap the cocoa

How well each one fits the dish's main ingredients (sugar, syrup, vanilla):

  1. Chestnutfits better
  2. Almondfits better
  3. Hazelnutfits better
  4. Cocoathe original

Fit is the average pairing score against sugar, syrup, vanilla. Candidates are from the same food group and used in at least 100 recipes.

“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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