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 liquid
Boil the lemon rind in water until yellow.
Strain the liquid.
Let the liquid cool.
Make the cream
Add the lemon juice, egg yolks, and egg whites.
Stir on low heat until thickened like cream.
Set and serve
Pour the mixture into jelly glasses.
Let the glasses cool.
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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Egg + sugartop 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
- Their proteins thicken and set as they warm gently, giving the cream body and richness.
- Egg whites
- Their proteins set when gently heated, helping the mixture thicken into a light, creamy texture.
- Lemon juice
- Adds sharp acidity and bright lemon flavour that balances the richness of the eggs.
- Lemon rind
- Boiled in water, it releases aromatic lemon oils and flavour into the liquid.
The step that matters
Stir on low heat until thickened like cream. Egg proteins thicken the mixture as it warms, but high heat or overheating can curdle or scramble the eggs. Gentle, constant stirring over low heat keeps the custard smooth.
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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