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 peel
Score the peel of the oranges in quarters and remove it, keeping as much white pith as possible.
Place the peel in a pot and cover with cold water, changing the water three times while boiling until tender.
Drain the peel and cut it into very thin shreds.
Make the marmalade
Squeeze the oranges and add the juice of four lemons for every dozen oranges.
Weigh the shredded peel and juice, then combine with sugar to make the syrup.
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
- Their peel and pith supply bitterness and natural pectin, which helps the marmalade set.
- Lemons
- Their juice adds acidity that brightens flavour and supports pectin setting.
- Sugar
- Adds sweetness, helps the marmalade set and preserves it.
The step that matters
Soften the peel fully before adding sugar. Sugar hardens the peel and stops it softening, so the shreds must be tender after boiling. Adding sugar too early leaves the peel tough and chewy in the finished marmalade.
“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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