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 the fruit
Grate the rind of the oranges and lemons.
Squeeze and strain the juice from the oranges and lemons.
Make the syrup
In a pot, combine the juice, sugar, and water, and boil until it thickens.
Set the jelly
Prepare the isinglass jelly according to package instructions.
Add the syrup to the isinglass jelly and boil for a moment.
Strain the jelly and let it settle before pouring it 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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Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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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
- Seville oranges
- Provide the juice and grated rind that give the jelly its bright, sharp citrus flavour.
- China oranges
- Add sweet citrus juice and aromatic rind to the flavour of the jelly.
- Lemons
- Add acidity and fragrant rind that balance the sweetness of the syrup.
- Lump sugar
- Sweetens the juice and, as it boils down, thickens it into a syrup.
- Isinglass
- Sets the liquid into a firm, wobbly jelly as it cools.
The step that matters
Boiling the syrup into the isinglass jelly. Isinglass is a collagen-based gelling agent. Boiling it hard or for too long can weaken its setting power, so the syrup should be added and brought to a brief boil only, then the mixture left to set undisturbed.
“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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