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Fruit Cake

A dense, spiced cake made with sugar, flour, butter, eggs, molasses, dried fruit, spices, and baking soda.

From an old cookbook · modernised transcription
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Why it works: Flour and raisin match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 9,075 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Fruit Cake

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.

Prepare

  1. Preheat your oven to 350°F (175°C).

Make the batter

  1. In a large bowl, cream together the sugar and butter, then add the eggs one at a time, mixing well after each addition.

  2. Stir in the molasses.

  3. In another bowl, combine the flour, baking soda, spices, currants, raisins, and citron.

  4. Gradually add the dry ingredients to the wet mixture, mixing until just combined.

Bake

  1. Pour the batter into two large loaf pans.

  2. Bake for about 1 hour or until a toothpick inserted in the center comes out clean.

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. Flour + raisintop 1% of all pairs
    Smell alikestrong
    Cooked together9,075 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Clove + raisintop 9% of all pairs
    Smell alikemoderate
    Cooked together4,070 recipes

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

  3. Currant + raisintop 10% of all pairs
    Smell alikelow
    Cooked together6,180 recipes

    Shared aroma: gamma-nonanolactone (coconut, creamy).

  4. Sugar + molassestop 11% of all pairs
    Smell alikemoderate
    Cooked together9,225 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  5. Flour + buttertop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Flour and butter barely smell alike, yet cooks put them together in 124,287 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

Eggs
Bind the batter and add structure as they set during baking.
Butter
Adds fat and richness, and creamed with sugar it traps air for a tender crumb.
Sugar
Sweetens the cake and helps create a tender texture when creamed with butter.
Flour
Provides the main structure that holds the cake together as it bakes.
Baking soda
Reacts with the acidic molasses to produce gas that helps the cake rise.
Molasses
Adds moisture, dark color, and a deep, slightly acidic flavor.

The step that matters

Adding the dry ingredients to the wet mixture. Mixing only until just combined keeps gluten development limited, so the cake stays tender instead of tough and dense.

Swap the currant

How well each one fits the dish's main ingredients (sugar, flour, butter, egg, molasses, clove, raisin):

  1. Vanillafits better
  2. Figfits better
  3. Applefits better
  4. Currantthe original

Fit is the average pairing score against sugar, flour, butter, egg, molasses, clove, raisin. 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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