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
Cover the oranges with water and boil until the skin is soft enough to easily insert the head of a pin.
When cool, thinly slice the peel and shred the pulp into small pieces.
Make the marmalade
For every pound of fruit, add 2 pounds of sugar, ½ cup of the water used for boiling, and the juice of 4 lemons.
Boil the mixture for 1 hour.
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
- Peel and pulp provide the bitter flavor, pectin for setting, and the bulk of the marmalade.
- Sugar
- Sweetens the marmalade and helps it set by binding water and firming the pectin gel.
- Lemons
- Juice adds acidity that brightens flavor and supports pectin setting.
The step that matters
Boiling the mixture for 1 hour. Boiling concentrates the sugar and fruit until the pectin and acid can form a gel. Too little boiling leaves a runny marmalade, while overboiling can darken and toughen 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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