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 ↓
Yellow' Lemon-cream, Without Cream
Ingredients
Directions
Prepare the lemons
Slice the lemons very thin and soak them in water.
Squeeze the juice from the lemons into a bowl with the powdered sugar.
Make the mixture
Beat the egg yolks well and add the lemon peel and juice mixture, mixing thoroughly.
Strain the mixture through a fine cloth into a saucepan.
Cook and serve
Heat the saucepan over low heat, stirring continuously until thick and hot but not boiling.
Pour the mixture into jelly glasses.
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 yolks
- Proteins thicken the mixture as they gently heat, giving the cream its body and set.
- Lemons
- Juice supplies sharp acidity and the peel adds fragrant lemon aroma.
- Powdered sugar
- Dissolves easily into the juice, adding sweetness that balances the lemon's acidity.
The step that matters
Heating the mixture over low heat. Egg yolk proteins set when heated, but too much heat or boiling makes them curdle and turn grainy. Gentle, constant stirring keeps the custard smooth and thick.
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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