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Loaf Plum Cake

A sweet loaf cake made with butter, brown sugar, molasses, sour milk, flour, currants, raisins, and spices.

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 ↓

Loaf Plum 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. Cream the butter and brown sugar together until light and fluffy.

  2. Beat in the eggs one at a time, mixing well after each addition.

  3. Stir in the molasses and sour milk until combined.

  4. Gradually add the flour, mixing until just incorporated.

  5. Fold in the currants and raisins.

  6. Add the spices and mix until evenly distributed.

Bake

  1. Pour the batter into a greased loaf pan.

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

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

  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. 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 sugar to trap air, giving a tender, rich crumb.
Eggs
Bind the batter and add structure as the cake sets.
Flour
Forms the structure that holds the cake together as it bakes.
Molasses
Adds sweetness, moisture, and deep color to the crumb.
Sour milk
Adds moisture and acidity that tenderizes the crumb.
Currants
Add chewy pockets of fruit sweetness throughout the loaf.

The step that matters

Adding the flour. Mixing flour only until just incorporated keeps gluten development limited, so the loaf stays tender rather than tough.

Swap the currant

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

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

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