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Dessert

Fruit Cake

A dense cake made with brown sugar, butter, molasses, coffee, eggs, flour, spices, and dried fruit.

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.

Make the batter

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

  2. In a large bowl, cream together the brown sugar and butter. Stir in the molasses and strong coffee.

  3. Beat in the eggs one at a time.

  4. In another bowl, combine the flour, baking soda, and salt. Gradually add the dry ingredients to the wet mixture.

  5. Fold in the raisins, currants, citron, walnuts, almonds, cloves, cinnamon, nutmeg, and vanilla.

Bake

  1. Pour the batter into a greased cake pan.

  2. Bake for about 1 hour or until a toothpick 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. Raisin + curranttop 10% of all pairs
    Smell alikelow
    Cooked together6,180 recipes

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

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

    Shared aroma: ethanol (alcoholic, ethereal).

  4. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Molasses + raisintop 12% of all pairs
    Smell alikelow
    Cooked together3,577 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

Butter and flour 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 the cake sets in the oven.
Flour
Provides the structure that holds the dense fruit and nuts in the cake.
Butter
Adds fat for a tender crumb and rich flavor.
Brown sugar
Adds sweetness and moisture, and helps the crust brown.
Molasses
Adds moisture, dark color, and a deep, slightly bitter sweetness.
Baking soda
Reacts with the acidic molasses and coffee to help the cake rise.

The step that matters

Gradually add the dry ingredients to the wet mixture. Adding flour in portions keeps the batter smooth and emulsified. Overmixing once flour is in develops gluten, which can make the cake tough.

Swap the currant

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

  1. Vanillafits better
  2. Figfits better
  3. Applefits about as well
  4. Currantthe original

Fit is the average pairing score against sugar, butter, molasses, coffee, egg, flour, 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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