Why it works: Pear and plum match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 245 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
Mixed Marmalade
Ingredients
Directions
Prepare the fruit
Core and peel the apples and pears.
Remove the stones from the plums.
Blanch the plum kernels and pound them with a little rose-water.
Combine all the fruits in a jar with a little sugar, but do not add water.
Cook
Bake the mixture in a cool oven.
Beat the mixture in a preserving pan, then stir in the sugar.
Boil for one hour.
Dry and set
Pour the marmalade into small deep dishes and dry it gently in a cool oven.
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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Pear + plumtop 1% of all pairsSmell alikestrongCooked together245 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Apple + peartop 1% of all pairsSmell alikestrongCooked together649 recipes
Shared aroma: isoamyl acetate (banana, fruity).
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Apple + plumtop 2% of all pairsSmell alikestrongCooked together404 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Pear + sugartop 17% of all pairsSmell alikelowCooked together2,079 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
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Apple + sugartop 18% of all pairsSmell alikelowCooked together16,478 recipes
Shared aroma: beta-damascenone (apple, rose).
Apple and sugar barely smell alike, yet cooks put them together in 16,478 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
- Apples
- Provide pectin and body, giving the marmalade its thick, spreadable structure.
- Pears
- Add bulk and soft pulp, contributing moisture and a mellow sweetness to the set.
- Plums
- Add tartness and flavour that balances the sugar in the finished preserve.
- Sugar
- Sweetens the fruit and, as it concentrates during boiling, helps the marmalade set and keep.
The step that matters
Boil for one hour. Boiling concentrates the fruit and sugar until the mixture thickens. Undercooking leaves it runny, while overcooking can darken and stiffen it, so the timing matters.
Swap the plum
How well each one fits the dish's main ingredients (apple, pear, sugar, rose):
- Vanillafits better
- Quincefits about as well
- Peachfits about as well
- Plumthe original
Fit is the average pairing score against apple, pear, sugar, rose. Candidates are from the same food group and used in at least 100 recipes.
“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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