Why it works: Plum and apple match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 404 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
To Preserve Fruit for Tarts
Ingredients
Directions
Prepare the jars
Gather ripe cherries, plums, and American apples.
Place them in small jars that hold 1 pound each.
Sprinkle 6 oz of pounded sugar over each jar.
Cover each jar with 2 tied bladders.
Cook and store
Set the jars in a large pot of water up to the neck.
Boil gently for 3 hours.
Store the jars in a dry place.
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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Plum + appletop 2% of all pairsSmell alikestrongCooked together404 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Apple + sugartop 18% of all pairsSmell alikelowCooked together16,478 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Plum + sugartop 21% of all pairsSmell alikelowCooked together2,313 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
- Cherries
- Provide the main fruit flavor and body of the preserve.
- Plums
- Add fruit body and tartness to the preserve.
- American apples
- Add pectin and body, helping the preserved fruit hold together.
- Loaf sugar
- Sweetens the fruit and draws out its juices as it preserves.
The step that matters
Boil gently for 3 hours. Keeping the water at a gentle simmer rather than a hard boil cooks the fruit evenly without breaking it apart. Sugar and steady heat together help preserve the fruit over the long cook.
Swap the plum
How well each one fits the dish's main ingredients (apple, sugar):
- Pearfits better
- Vanillafits better
- Apricotfits about as well
- Plumthe 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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