Why it works: Pecans and walnut match in chemistry and in kitchens. They rank in the top 4% of all ingredient pairs, and cooks put them together in 634 recipes. Both carry 2-undecenal, which smells sweet. The science ↓
Grape Preserves
Ingredients
Directions
Remove the pulp from the grapes and boil for a few minutes.
Strain the mixture through a colander.
Cook all ingredients together until preserved.
Add the nuts when the mixture is nearly done.
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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Pecans + walnuttop 4% of all pairsSmell alikestrongCooked together634 recipes
Shared aroma: 2-undecenal (sweet).
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Grape + orangetop 6% of all pairsSmell alikemoderateCooked together1,771 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Grape + walnuttop 8% of all pairsSmell alikemoderateCooked together1,427 recipes
Shared aroma: 1-hexanal (fruit).
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Walnut + orangetop 12% of all pairsSmell alikemoderateCooked together1,058 recipes
Shared aroma: 2,4-nonadienal (fatty, green).
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Grape + pecanstop 14% of all pairsSmell alikemoderateCooked together552 recipes
Shared aroma: alpha-pinene (pine, turpentine).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Grapes
- Provide the main fruit body and natural pectin that help the preserve thicken as it cooks.
- Sugar
- Sweetens the preserve and helps it set into a thick, spreadable texture.
- Pecans
- Add crunch and a rich, toasted flavour that contrasts with the soft fruit.
- English walnuts
- Add crunch and a rich, toasted flavour that contrasts with the soft fruit.
- Oranges
- Contribute acidity and aromatic citrus flavour from the rind and juice.
The step that matters
Add the nuts when the mixture is nearly done. Nuts added too early go soft and lose their crunch during long simmering. Adding them near the end keeps their texture and fresh, toasted flavour intact in the finished preserve.
Swap the pecans
How well each one fits the dish's main ingredients (grape, walnut, sugar, orange):
- Almondfits better
- Pistachiofits better
- Brazil nutfits better
- Pecansthe original
Fit is the average pairing score against grape, walnut, sugar, orange. 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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