Why it works: Sugar and lemon 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
Prepare
Rub the sugar on the lemon rind, then squeeze and strain the juice.
Combine the lemon juice with cold water to make 1 pint.
Soak the gelatine in cold water for 15 to 20 minutes.
Heat the soaked gelatine in a saucepan, stirring until dissolved.
Separate the egg whites and yolks.
Whisk the egg whites to stiff peaks.
Make the jelly
Beat the yolks slightly and add them to the saucepan with the dissolved gelatine and sugar.
Stir gently over low heat until the sugar dissolves and the yolks are cooked, but do not let it boil.
Remove from heat and fold in the whipped egg whites gently.
Pour the mixture into a mold rinsed with cold water and refrigerate until firm.
Serve
Unmold and serve.
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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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
-
Egg + sugartop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
Sugar and lemon 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
- Whites whipped to stiff peaks add lightness and airy structure; yolks add richness and body.
- Gelatine
- Sets the liquid into a firm jelly as it cools.
- Loaf sugar
- Sweetens the jelly and helps balance the sharpness of the lemon.
- Lemons
- Provide acidity and bright lemon aroma from the rind and juice.
The step that matters
Stir the yolks over low heat without boiling. Gentle heat cooks the yolks enough to be safe and thicken the base, while boiling can curdle the egg and weaken the gelatine's setting power.
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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