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, Made Without Cream
Ingredients
Directions
Prepare the infusion
Pour boiling water over the lemon rinds and sugar in a bowl and let sit for 1 hour.
Make the custard
Beat the egg whites and yolks together until well combined.
Add the beaten eggs and lemon juice to the lemon-sugar mixture and mix thoroughly.
Strain the mixture into a deep jug.
Place the jug in a pan of boiling water and stir continuously until thickened.
Pour the mixture out and stir occasionally until nearly cold.
Chill and serve
Transfer to glasses and refrigerate for at least 24 hours before serving.
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).
-
Lemon + eggtop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
-
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
- Egg whites
- Whisked eggs set into the mixture as it heats, giving the cream its thick, light body.
- Egg yolks
- Add richness and help the mixture thicken and set smoothly as it heats.
- Lemon juice
- Provides the sharp acidity that defines the flavour and helps thin the set custard.
- Fine sugar
- Sweetens the cream and draws flavour from the lemon rinds during the infusion.
The step that matters
Stirring over boiling water until thickened. Eggs thicken gently but can scramble if overheated, so constant stirring over moderate heat keeps the custard smooth rather than 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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