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Chocolate Fudge

A chocolate fudge made with bitter chocolate, milk, sugar, Karo syrup, butter, and vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Chocolate Fudge

Why it works: Milk and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓

Chocolate Fudge

Ingredients

Directions

Make the fudge

  1. Grate the chocolate and mix it with all the ingredients except the vanilla.

  2. Cook slowly, stirring occasionally, until it forms a soft ball when dropped into cold water.

Finish and set

  1. Remove from heat, add vanilla, and beat until it begins to thicken.

  2. Pour into a buttered pan and, when nearly cold, cut into squares.

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.

Photo for illustrative purposes only · Contact us to use it

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. Milk + vanillatop 5% of all pairs
    Smell alikemoderate
    Cooked together19,187 recipes

    Shared aroma: ethyl caproate (fruity, apple peel).

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

    Shared aroma: sotolon (curry, maple).

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

    Shared aroma: ethanol (alcoholic, ethereal).

  4. Milk + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

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

Bitter chocolate
Provides the chocolate flavour and rich body of the fudge.
Sugar
Sweetens the fudge and, as it cooks, helps form its smooth, firm texture.
Karo syrup
Interferes with sugar crystallisation, keeping the fudge smooth rather than grainy.
Milk
Adds moisture and dairy fat, softening the texture of the fudge.
Butter
Adds fat for a richer mouthfeel and a softer, creamier bite.

The step that matters

Beating after removing from heat. Beating while the syrup cools lets sugar crystals form in a controlled way. Beating too early or too late changes whether the fudge sets smooth or grainy.

“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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