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 Icing
Ingredients
Directions
Make the icing
Combine sugar and sour cream in a saucepan.
Boil gently without stirring until it threads.
Finish and spread
Cool until tepid, then add the flavoring.
Beat until creamy, then spread quickly over the cake.
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.
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Cream + sugartop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Sugar + orangetop 20% of all pairsSmell alikelowCooked together19,212 recipes
Shared aroma: beta-damascenone (apple, rose).
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Cream + orangetop 28% of all pairsSmell alikelowCooked together4,170 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
Sugar and orange barely smell alike, yet cooks put them together in 19,212 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
- Sour cream
- Adds moisture and a tangy flavour that keeps the icing soft and creamy.
- Granulated sugar
- Dissolves and cooks into a syrup that sets the icing and gives it sweetness.
The step that matters
Boil gently without stirring until it threads. Stirring can trigger sugar crystallisation, leaving the icing grainy. Boiling only to the threading stage concentrates the sugar enough to set smoothly once beaten, while overcooking makes it hard and brittle.
Swap the orange
How well each one fits the dish's main ingredients (cream, sugar):
- Vanillafits better
- Strawberryfits better
- Raspberryfits better
- Orangethe 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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