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Dessert

Birthday Fruit Cake

A moist fruit cake made with butter, flour, raisins, currants, citrus peel, spices, and eggs.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 12 ingredients
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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 ↓

Birthday Fruit Cake

Ingredients

Directions

The book gives no oven temperature. The 300°F (150°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare

  1. Preheat the oven to 300°F (150°C).

  2. Prepare a round cake tin by greasing it and lining it with parchment paper, allowing the paper to extend an inch above the tin.

Make the batter

  1. Cream the butter, eggs, and sugar together.

  2. Add the ginger and mixed spices while creaming.

  3. Once creamed, add the flour and mix halfway.

  4. Add all ingredients except the currants and mix lightly but thoroughly.

  5. Fold in the currants.

  6. Smooth the mixture level in the tin.

Bake and finish

  1. Bake for about 4 hours, covering with paper halfway through to prevent over-browning.

  2. Check for doneness by inserting a straw or wire; if it comes out clean, the cake is done.

  3. If not, return to the oven gently.

  4. Once baked, let cool, remove the paper, trim rough edges with a sharp knife, and ice as desired.

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. Orange + lemontop 1% of all pairs
    Smell alikestrong
    Cooked together10,634 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  3. Raisin + almondtop 2% of all pairs
    Smell alikemoderate
    Cooked together1,781 recipes

    Shared aroma: 2-nonanone (fruity, floral).

  4. Flour + almondtop 5% of all pairs
    Smell alikemoderate
    Cooked together8,673 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Orange + almondtop 6% of all pairs
    Smell alikemoderate
    Cooked together3,125 recipes

    Shared aroma: 2,4-decadienal (seaweed).

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

What each ingredient does

Butter
Creaming with sugar traps air, giving the cake a tender, rich crumb.
Eggs
Provide structure and richness as they set during baking.
All-purpose flour
Forms the main structure of the cake as its proteins set with heat.
Sugar
Creams with the butter to trap air and adds sweetness and browning.
Sultana raisins
Add sweetness and chewy texture throughout the cake.
Blanched almonds
Add crunch and nutty flavour, and some fat for moistness.

The step that matters

Covering the cake halfway through baking. A four-hour bake risks over-browning the outside before the centre sets. Covering with paper slows surface browning while the interior finishes cooking.

Swap the orange

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

  1. Vanillafits better
  2. Figfits better
  3. Orangethe original
  4. Coconutfits about as well

Fit is the average pairing score against butter, flour, raisin, lemon, sugar, egg, almond. 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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