Why it works: Apple and quince work together. They rank in the top 1% of all ingredient pairs, and cooks put them together in 506 recipes. Both carry ethyl isobutyrate, which smells fruity, ethereal. The science ↓
Quince Peeserves
Ingredients
Directions
Prepare the fruit
Pare, quarter, and core the quinces and apples.
Steam the fruit until a straw pierces them easily.
Cook the syrup
Make a syrup with an equal weight of sugar and the steamed fruit.
Boil the mixture until it turns a rich red color, skimming frequently.
Finish and serve
Spread the fruit on flat dishes.
Boil the syrup down until it begins to jelly at the kettle's edge.
Strain the syrup through a sieve for a nicer texture.
Pour the syrup over the quinces.
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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Apple + quincetop 1% of all pairsSmell alikemoderateCooked together506 recipes
Shared aroma: ethyl isobutyrate (fruity, ethereal).
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Apple + sugartop 18% of all pairsSmell alikelowCooked together16,478 recipes
Shared aroma: beta-damascenone (apple, rose).
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Quince + sugartop 21% of all pairsSmell alikemoderateCooked together1,444 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
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
- Quinces
- Their natural pectin helps the preserve set and gives it a firm body.
- Smooth sweet apples
- They add more pectin and a smoother texture to help the preserve thicken.
- Sugar
- Sweetens the preserve and, once boiled down, helps it thicken and gel.
The step that matters
Boiling the syrup down until it begins to jelly at the edge. Fruit pectin and sugar set only at the right concentration. Stopping too early leaves a runny preserve, while boiling too long makes it hard and overly sugary.
Swap the quince
How well each one fits the dish's main ingredients (apple, sugar):
- Pearfits better
- Vanillafits about as well
- Apricotfits about as well
- Quincethe original
Fit is the average pairing score against apple, sugar. 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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