Why it works: Sugar and lemon are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Cold Icing for Cake
Ingredients
Directions
Beat the egg whites until stiff.
Gradually stir in the pulverized sugar, then beat well and add lemon or rose essence to taste.
For a second icing, beat 4 egg whites and mix with 1 pound of pulverized sugar and 2 teaspoons of cornstarch.
Flavor with lemon essence to your preference.
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 + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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
- Egg whites
- Beaten until stiff, they trap air and form the light, spreadable structure of the icing.
- Pulverized sugar
- Dissolves into the whites to sweeten the icing and thicken it into a smooth paste.
- Cornstarch
- Stabilizes the second icing, helping it hold its shape and stay smooth.
The step that matters
Beat the egg whites until stiff. Egg whites only hold air when fully whipped and free of fat or yolk. Under-beaten whites make a runny icing, and over-beaten whites turn dry and grainy.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, egg):
- Vanillafits better
- Raisinfits about as well
- Lemonthe original
- Datesfits less well
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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