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
Ingredients
Directions
Prepare
Pare the lemons thinly and place them in a saucepan with water.
Squeeze the juice over the sugar.
Make the custard
Beat the egg yolks, then add the lemon peel and juice.
Strain the mixture through a flannel into a saucepan.
Heat over the fire, stirring until thick and scalding hot.
Serve
Pour into jelly glasses and add lumps of sugar rubbed on the lemons.
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
- Thicken the custard as it heats and give it a rich, smooth set.
- Lemon juice
- Adds sharp acidity that brightens the custard and balances its sweetness.
- Sugar
- Sweetens the custard and offsets the sharpness of the lemon.
- Lemon peel
- Adds fragrant lemon oils that give the custard its aroma.
The step that matters
Heating and stirring until thick. Egg yolks thicken through gentle heat. If the mixture is heated too fast or left unstirred, the yolks can curdle or scramble, leaving a grainy texture. Constant stirring spreads the heat evenly.
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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