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 Marmalade
Ingredients
Directions
Prepare the fruit
Cut the rind very thin from a third of the oranges and lemons.
Boil the rind in 2 quarts of water until it can be pierced easily with a broom straw.
Drain the water and cut the rind into fine strips.
Remove all the white bitter skin and pips from the remaining fruit.
Combine the rind strips with the pulp of the oranges and lemons.
Cook and seal
Weigh the mixture and add an equal weight of sugar.
Cook in a porcelain-lined or granite-ware kettle until clear.
Pour into glasses, let cool, cover with brandied paper, and seal.
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
- Oranges
- Provide the bulk of the pulp and juice, giving the marmalade its main flavor and body.
- Lemons
- Add acidity and natural pectin, helping the marmalade set.
- Sugar
- Sweetens the marmalade and, at this high concentration, helps it set and keep.
The step that matters
Cook until clear. Cooking must continue until the rind is fully tender and the syrup thickens to a clear, gel-ready state. Undercooking leaves the marmalade runny and the rind tough; overcooking can darken and harden it.
“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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