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Dessert

Walnut Cake

A sweet cake made with butter, sugar, milk, flour, baking powder, egg whites, raisins, walnuts, and a sugar yolk icing.

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 ↓

Walnut 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.

Prepare the cake

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

  2. Cream the butter and sugar together until light and fluffy.

  3. Add the sweet milk and mix well.

  4. In a separate bowl, combine the flour and baking powder, then gradually add to the butter mixture.

  5. Fold in the beaten egg whites, raisins, and chopped walnuts.

  6. Pour the batter into a greased cake pan and bake until a toothpick comes out clean.

Make the icing and finish

  1. For the icing, beat the egg yolks with white sugar until stiff.

  2. Spread the icing on the hot cake, sprinkle with walnuts, and return to the oven until the icing is set.

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

    Shared aroma: isobutyraldehyde (malty, green).

  4. Flour + walnuttop 12% of all pairs
    Smell alikemoderate
    Cooked together5,873 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Raisin + walnuttop 13% of all pairs
    Smell alikemoderate
    Cooked together647 recipes

    Shared aroma: 1-octen-3-ol (mushroom, earthy).

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
Adds fat and richness, giving the cake a tender crumb.
Flour
Provides the structure that holds the cake together as it bakes.
Baking powder
Releases gas during baking so the cake rises and becomes light.
Egg whites
Beaten whites trap air, adding lift and a lighter texture to the batter.
Egg yolks
Add richness and help bind the icing.

The step that matters

Folding in the beaten egg whites. Stirring too vigorously deflates the air trapped in the whites, which reduces lift and leaves a denser cake. Fold gently with a spatula until just combined.

Swap the walnut

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

  1. Almondfits better
  2. Chestnutfits better
  3. Pistachiofits about as well
  4. Walnutthe original

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