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
Slice 3 oranges and the lemon as thin as possible.
Peel the other 2 oranges and remove all tough white skin.
Slice the peeled oranges thinly and add to the first slices.
Combine the fruit with 1 pound of sugar and 2 quarts of water.
Cook and set
Let the mixture stand for 24 hours.
Boil for 2 hours.
Let it stand again for 24 hours.
Boil for 30 minutes.
Jar
Can the marmalade.
Seal the jars.
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).
-
Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
-
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 fruit, along with their peel, which gives the marmalade its bitter flavour and texture.
- Lemon
- Adds sharp acidity and extra pectin-rich peel that helps the marmalade set.
- Sugar
- Sweetens the marmalade and, when boiled down, helps it thicken and set.
The step that matters
Boil for 2 hours. Long simmering softens the thick peel and draws pectin out of the fruit. Too short a boil leaves the peel tough and the marmalade runny, while overcooking can darken and bitter 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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