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
Peel the oranges and separate the white lining from the yellow rind.
Cut the rind into fine shreds to fill 3 cups.
Boil the rinds until tender, changing the water when it first boils.
Cover the pulp with cold water.
Boil the pulp until soft.
Make the marmalade
Add the juice of the lemons and 3 cups of sugar to the pulp.
Add the boiled rinds.
Boil for 20 minutes or until jellied.
Finish
Pour into glasses.
Let cool.
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 bitter peel and pulp that give marmalade its characteristic flavor and body.
- Lemons
- Add acidity and natural pectin that help the marmalade set.
- Sugar
- Sweetens the marmalade and helps it thicken into a jelly as it cooks.
The step that matters
Boil for 20 minutes or until jellied. Sugar and pectin only set into a jelly at the right concentration, so underboiling leaves a runny marmalade while overboiling can make it dense and dull. Judge by a set test rather than the clock alone.
“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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