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 gelatine in ½ pint of cold water for 2 hours.
Grate the orange rind into a bowl, pour the orange juice over it, and let it stand for 2 hours.
Make the jelly
Beat the egg whites and stir them into the juice mixture.
Add the remaining ingredients to the bowl.
Pour everything into a saucepan and stir over medium heat for 10 minutes.
When the liquid bubbles, cover the pan and keep it at boiling point for 30 minutes.
Strain and set
Strain the mixture as directed for wine jelly and pour into a 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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Sugar + lemontop 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).
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Sugar + eggtop 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
- Gelatine
- Forms the firm gel that lets the jelly hold its shape when set.
- Egg whites
- Clarify the juice, gathering sediment so the finished jelly is clear.
- Sugar
- Adds sweetness and body to the liquid.
- Orange juice
- Provides the main orange flavour and liquid for the jelly.
- Lemon juice
- Adds acidity that brightens the sweetness of the orange.
- Orange rind
- Adds aromatic orange oil to the flavour of the jelly.
The step that matters
Stirring in the egg whites before heating. The beaten egg whites must be mixed evenly through the juice before heating. As the mixture warms, the whites coagulate and trap cloudy particles, which straining then removes to leave a clear jelly.
Swap the orange
How well each one fits the dish's main ingredients (sugar, lemon, egg):
- Orangethe original
- Vanillafits about as well
- Limefits less well
- Raisinfits less well
Fit is the average pairing score against sugar, lemon, 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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