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 ↓
Lemon Cream
Ingredients
Directions
Make the custard
Beat the yolks of 4 eggs with 4 tablespoons of sugar.
Add the juice and grated rind of 1 large lemon and 4 tablespoons of hot water.
Cook while stirring constantly until it thickens, but do not let it boil.
Finish and serve
Remove from heat and stir in the beaten egg whites mixed with 2 tablespoons of sugar.
Serve very cold with lady fingers or any sweet wafer.
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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Egg + sugartop 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 yolks
- Thicken the mixture as they set during gentle cooking, giving the cream its body.
- Egg whites
- Whipped with sugar and folded in, they add lightness and airy volume to the cream.
- Lemon juice and rind
- Provide acidity and bright aroma that cut through the sweetness of the cream.
- Sugar
- Sweetens the custard and helps stabilise the beaten egg whites.
The step that matters
Cook without boiling. Egg yolks thicken as they heat, but if the mixture boils they can scramble and curdle, leaving a grainy texture instead of a smooth cream. Stirring constantly spreads the heat evenly.
Swap the lemon
How well each one fits the dish's main ingredients (egg, sugar):
- Vanillafits better
- Raisinfits about as well
- Lemonthe original
- Datesfits less well
Fit is the average pairing score against egg, 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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