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Dessert

Imperial Cake

A lemon cake with raisins and nuts baked at 300°F.

From an old cookbook · modernised transcription
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Why it works: Raisin and flour 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 ↓

Imperial Cake

Oven, in the book's wordsA slow oven

Ingredients

Directions

Prepare the batter

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

  2. In a large bowl, cream together the butter and sugar until light and fluffy.

  3. Add the eggs one at a time, mixing well after each addition.

  4. Stir in the grated lemon rind and lemon juice.

  5. Fold in the raisins and nuts.

  6. In a separate bowl, combine the flour, baking powder, and baking soda.

  7. Gradually add the dry ingredients to the wet mixture, mixing until just combined.

Bake

  1. Pour the batter into a greased cake pan.

  2. Bake for 2 to 2½ hours, 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. Raisin + flourtop 1% of all pairs
    Smell alikestrong
    Cooked together9,075 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Lemon + walnuttop 10% of all pairs
    Smell alikestrong
    Cooked together2,149 recipes

    Shared aroma: 2-nonenal (fatty, green).

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

    Shared aroma: isobutyraldehyde (malty, green).

  4. Walnut + flourtop 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
Creams with sugar to trap air and give the cake a tender, rich texture.
Sugar
Sweetens the cake and helps create a light, fluffy base when creamed with butter.
Eggs
Add structure and richness, and help bind the batter as it sets.
Flour
Forms the structure of the cake as the batter bakes and sets.
Baking powder
Releases gas in the batter to help the cake rise.
Baking soda
Reacts with acidic lemon juice to help the cake rise and brown.

The step that matters

Gradually add the dry ingredients to the wet mixture, mixing until just combined.. Overmixing once flour is added develops gluten, which can make the cake tough and dense. Mixing only until combined keeps the crumb tender.

Swap the lemon

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

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

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