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Dessert

Plum Cake

A sweet cake with raisins, currants, and citron, flavored with lemon essence and brandy.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 10 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 ↓

Plum Cake

Oven, in the book's wordsA quick oven

Ingredients

Directions

The book says “a quick oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure. The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.

Prepare

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

Make the batter

  1. In a large bowl, cream together the sugar and butter.

  2. Add the milk, saleratus, brandy, and essence of lemon, mixing well.

  3. Gradually add enough flour to form a stiff batter.

  4. Fold in the raisins, currants, and citron.

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. Brandy + curranttop 7% of all pairs
    Smell alikelow
    Cooked together3,057 recipes

    Shared aroma: ethyl cinnamate (sweet, balsamic).

  3. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  4. Raisin + curranttop 10% of all pairs
    Smell alikelow
    Cooked together6,180 recipes

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

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

    Shared aroma: isobutyraldehyde (malty, green).

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

Butter
Creams with the sugar to add richness and tenderness to the crumb.
Flour
Forms the stiff batter that gives the cake its structure as it sets.
Saleratus
Leavens the batter so the cake rises and becomes lighter in texture.
Milk or buttermilk
Adds moisture to the batter and hydrates the flour.
Raisins
Add chewy pockets of fruit sweetness throughout the cake.
Currants
Add small bursts of tart, concentrated fruit flavor throughout the cake.

The step that matters

Folding in the fruit. Heavy fruit can sink to the bottom of a stiff batter. Folding gently, with the batter already stiff, keeps the raisins, currants, and citron spread evenly rather than deflating the batter.

Swap the lemon

How well each one fits the dish's main ingredients (sugar, butter, milk, brandy, flour, raisin, currant):

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

Fit is the average pairing score against sugar, butter, milk, brandy, flour, raisin, currant. 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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