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Chocolate Fudge

Chocolate fudge made with sugar, nuts, Karo syrup, cream, baking soda, chocolate, and butter.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Chocolate Fudge

Why it works: Sugar and syrup match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 5,842 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓

Chocolate Fudge

Ingredients

Directions

Make the fudge

  1. Melt the butter and chocolate with Karo syrup in a saucepan.

  2. Add cream, sugar, baking soda, and nuts to the mixture.

  3. Cook until it forms a soft ball when tested in cold water.

  4. Remove from heat and stir in more butter.

Cool and beat

  1. Let cool before beating.

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

    Shared aroma: ethanol (alcoholic, ethereal).

  2. Cream + buttertop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

  3. Sugar + creamtop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

    Shared aroma: 2,3-butanedione (butter, sweet).

  4. Nuts + chocolatetop 10% of all pairs
    Smell alikemoderate
    Cooked together440 recipes

    Shared aroma: furaneol (caramel, strawberry).

  5. Cream + chocolatetop 11% of all pairs
    Smell alikemoderate
    Cooked together5,466 recipes

    Shared aroma: delta-decalactone (sweet, creamy).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

White sugar
Forms the sugar syrup that sets into the fudge's firm, sweet body.
Cream
Adds moisture and richness, giving the fudge a softer, creamier texture.
Chocolate
Supplies fat and cocoa flavour, making the fudge rich and chocolatey.
Karo syrup
Interferes with sugar crystallisation, helping the fudge stay smooth rather than grainy.
Nuts
Add crunch and texture contrast to the soft fudge.

The step that matters

Cool before beating. The cooked sugar must cool before beating. Beating while it is still hot lets large sugar crystals form quickly, so the fudge turns grainy instead of smooth and creamy.

Swap the nuts

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

  1. Almondfits better
  2. Hazelnutfits better
  3. Pistachiofits better
  4. Nutsthe original

Fit is the average pairing score against sugar, syrup, cream, chocolate, butter. 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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