Why it works: Orange and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓
Orange Jelly
Ingredients
Directions
Prepare
Soak the gelatin in 1 pint of water.
Boil 3 pints of water with the sugar together, skimming well.
Make the jelly
Add the dissolved gelatin, orange juice, lemon juice, and beaten egg whites.
Bring to a boil, skim off any scum, and boil until it jellies.
Pour the jelly into a mold and strain before adding to the mold.
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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Orange + lemontop 1% of all pairsSmell alikestrongCooked together10,634 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Gelatin + sugartop 7% of all pairsSmell alikemoderateCooked together2,778 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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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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Orange + sugartop 20% of all pairsSmell alikelowCooked together19,212 recipes
Shared aroma: beta-damascenone (apple, rose).
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
- Gelatin
- Sets the liquid into a firm, wobbly jelly as it cools.
- Sugar
- Adds sweetness and helps give the jelly a clear, body-rich texture.
- Egg whites
- Coagulate when heated, trapping cloudy particles so they can be skimmed off for a clear jelly.
- Orange juice
- Provides the main citrus flavor and aroma.
- Lemon juice
- Adds acidity that brightens the flavor and balances the sugar.
The step that matters
Skim off the scum while boiling. Egg whites coagulate as they heat and carry cloudy impurities to the surface. Skimming them off keeps the jelly clear, and boiling until it jellies concentrates the gelatin enough to set firmly once cooled.
Swap the orange
How well each one fits the dish's main ingredients (gelatin, lemon, sugar, egg):
- Vanillafits about as well
- Orangethe original
- Raspberryfits less well
- Raisinfits less well
Fit is the average pairing score against gelatin, lemon, 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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