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 ↓
Egg Jelly
Ingredients
Directions
Make the jelly base
Cut lemon rind into very thin strips and place in a saucepan with sugar, gelatine, and ½ pint water.
Stir until the gelatine is dissolved.
Squeeze juice from two lemons and add enough water to make ½ pint.
Combine this with the gelatine mixture.
Thicken with eggs
Beat the eggs and add them to the mixture. Cook over gentle heat for a few minutes, stirring constantly. Do not let it boil, or it will curdle.
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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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).
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
- Eggs
- Beaten eggs thicken the warm mixture into a soft, creamy set as they cook.
- French leaf gelatine
- Sets the liquid into a firm, wobbly jelly as it cools.
- Lemons
- Provide the sharp, aromatic flavour from juice and rind.
- Sugar
- Sweetens the jelly and balances the lemon's acidity.
The step that matters
Cooking the eggs over gentle heat. Egg proteins set when heated, but if the mixture boils they tighten and curdle, leaving a grainy texture instead of a smooth, glossy jelly. Keep heat low and stir constantly.
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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