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Walnut Cake Filling

A sweet walnut filling for cakes made with sugar, sour cream, walnuts, butter, and vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Cream and butter are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓

Walnut Cake Filling

Ingredients

Directions

  1. Combine sugar, sour cream, chopped walnuts, and butter in a saucepan.

  2. Boil the mixture until it thickens enough to spread.

  3. Add vanilla to taste.

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. Cream + buttertop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

  2. Sugar + vanillatop 8% of all pairs
    Smell alikelow
    Cooked together35,032 recipes

    Shared aroma: beta-damascenone (apple, rose).

  3. Sugar + creamtop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

    Shared aroma: 2,3-butanedione (butter, sweet).

  4. Walnut + vanillatop 10% of all pairs
    Smell alikestrong
    Cooked together2,730 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  5. Walnut + meattop 13% of all pairs
    Smell alikemoderate
    Cooked together1,035 recipes

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

Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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

Granulated sugar
Sweetens the filling and helps it thicken as it cooks down.
Sour cream
Adds tangy acidity and moisture that balances the sweetness.
Chopped walnuts
Add crunch and nutty flavour to the filling.
Butter
Adds richness and a smooth, silky texture.

The step that matters

Boil the mixture until it thickens enough to spread. Sugar and dairy thicken as water evaporates and the mixture concentrates. Stop too early and the filling stays runny; cook too long and it sets stiff and grainy as it cools.

Swap the walnut

How well each one fits the dish's main ingredients (sugar, cream, meat, butter, vanilla):

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

Fit is the average pairing score against sugar, cream, meat, butter, vanilla. 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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