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
Grate the rind of the oranges and lemons.
Squeeze and strain the juice from the oranges and lemons.
Make the jelly
In a pot, combine the juice, sugar, and water; boil until it thickens slightly.
Add the syrup to the prepared isinglass jelly and boil once more.
Strain the mixture and let it settle before pouring 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
- Lump sugar
- Adds sweetness and, when boiled into the juice, helps thicken the syrup.
- Isinglass
- Gelatinous agent that sets the liquid into a firm, sliceable jelly.
- Orange and lemon juice
- Provides the acidity and bright flavour that balances the sugar.
The step that matters
Boiling the syrup with the isinglass jelly. Isinglass is a gelatin-like protein that sets as it cools. Boiling it again after the syrup is added can weaken its setting power, so the mixture should be heated only enough to combine it fully.
“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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