Why it works: Lemon and sugar 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 ↓
Lemon Cream
Ingredients
Directions
Prepare the lemon flavour
Thinly peel the rinds of the lemons.
Steep the rinds in water for 12 hours.
Strain the mixture.
Make the cream
Dissolve the sugar in it.
Add the strained lemon juice, beaten egg whites, and egg yolk.
Boil over low heat, stirring constantly, until thick like cream.
Pour into a glass or china dish.
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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Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Lemon + eggtop 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).
Lemon and sugar 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
- Lemon rinds
- Steeping releases the fragrant oils from the peel, giving the cream its aroma.
- Lemons
- Juice adds sharp acidity that brightens the flavour and balances the sugar.
- Fine loaf sugar
- Adds sweetness and body, softening the lemon's sharpness.
- Egg whites and egg yolk
- Egg proteins set when heated, thickening the mixture into a cream.
The step that matters
Boil over low heat, stirring constantly. Egg proteins set at moderate temperatures and can scramble or curdle if the heat is too high or unevenly applied. Low heat and constant stirring keep the custard smooth while it thickens.
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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