Why it works: Sugar and egg are a kitchen classic. They rank in the top 21% of all ingredient pairs, and cooks put them together in 122,807 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
White Frosting
Ingredients
Directions
Make the frosting
Soak the gelatin in hot water until it dissolves.
Stir in the white sugar and flavor with lemon.
In a bowl, beat the egg white until frothy.
Gradually mix in the powdered sugar until well combined.
Frost and decorate
Cover the cake with the frosting and place it in a cold area until firm.
To color some frosting pink, mix in beet‑root juice or red currant jelly.
Create a piping cone from writing paper, fill it with frosting, and squeeze to decorate.
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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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + red curranttop 26% of all pairsSmell alikelowCooked together1,156 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
-
Egg + red curranttop 28% of all pairsSmell alikemoderateCooked together345 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Gelatine
- Sets the dissolved sugar mixture so the frosting becomes firm when chilled.
- Egg white
- Whipped to a foam, it adds lightness and body to the frosting.
- Powdered sugar
- Thickens the frosting and adds sweetness as it is mixed in.
- White sugar
- Adds sweetness and helps give the frosting its body.
The step that matters
Gradually mix in the powdered sugar. Adding powdered sugar slowly lets it blend evenly without deflating the whipped egg white, keeping the frosting smooth and light.
Swap the red currant
How well each one fits the dish's main ingredients (sugar, egg):
- Vanillafits better
- Raisinfits better
- Lemonfits better
- Red currantthe original
Fit is the average pairing score against sugar, egg. 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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