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Dessert

Double Fudge

A two-layer fudge made with chocolate and walnut flavors.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 9 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 ↓

Double Fudge

Ingredients

Directions

Make the first layer

  1. Combine 2 cups granulated sugar, 1-2 cups cream, 2 squares Baker’s chocolate, and 1 tablespoon butter in a saucepan and boil for 7 minutes.

  2. Spread the mixture in buttered tins to cool.

Make the top layer

  1. Combine 2 cups brown sugar, 1-2 cups cream, 1 tablespoon vanilla, and 1 cup walnut meats in another saucepan.

  2. Add butter the size of a walnut and boil for 10 minutes.

  3. Pour this mixture on top of the cooled fudge in the pan.

Finish

  1. 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.

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

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

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

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

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

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

  5. Vanilla + walnuttop 10% of all pairs
    Smell alikestrong
    Cooked together2,730 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

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

Granulated sugar
Provides sweetness and the sugar structure that sets the fudge as it cools.
Baker’s chocolate
Adds rich chocolate flavour and fat that gives the fudge a dense, smooth body.
Cream
Adds moisture and fat, keeping the fudge smooth and soft rather than dry.
Brown sugar
Adds sweetness and moisture, along with a deeper, caramel-like flavour.
Walnut meats
Add crunch and a nutty flavour that contrasts with the soft fudge.

The step that matters

Boiling each mixture for the stated time. As the mixture boils, water evaporates and the sugar concentration rises. Boiling too briefly leaves the fudge soft and unable to set, while boiling too long makes it hard and grainy once cooled.

Swap the walnut

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

  1. Almondfits better
  2. Pecansfits about as well
  3. Chestnutfits about as well
  4. Walnutthe original

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