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Dessert

Sour Cream Frosting

A frosting made with sour cream, sugar, and walnuts.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 3 ingredients
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Why it works: Cream and sugar are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 43,450 recipes. Both carry 2,3-butanedione, which smells butter, sweet. The science ↓

Sour Cream Frosting

Ingredients

Directions

  1. Combine sour cream and sugar in a saucepan.

  2. Boil for 15 minutes.

  3. Remove from heat and stir in chopped walnuts.

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 + sugartop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

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

  2. Cream + walnuttop 21% of all pairs
    Smell alikelow
    Cooked together1,982 recipes

    Shared aroma: octanal (fat, soap).

  3. Sugar + walnuttop 26% of all pairs
    Smell alikemoderate
    Cooked together7,147 recipes

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

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Sour cream
Adds moisture and a tangy richness that balances the sweetness.
Sugar
Sweetens the frosting and, as it boils and concentrates, helps it thicken.
Walnuts
Add crunch and a nutty flavor against the soft, creamy frosting.

The step that matters

Boil for 15 minutes. Boiling concentrates the sugar and sour cream mixture, so the time controls thickness. Too short leaves the frosting runny, and too long makes it stiff or grainy as it cools.

Swap the walnut

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

  1. Almondfits better
  2. Pistachiofits better
  3. Chestnutfits better
  4. Walnutthe original

Fit is the average pairing score against cream, sugar. 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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