Why it works: Grape and apple match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,659 recipes. Both carry 2-isobutyl-3-methoxypyrazine, which smells green bell pepper, earthy. The science ↓
Grape Jam
Ingredients
Directions
Prepare the grapes
Pick the grapes from the bunches carefully and prick them with a steel pin.
Make the jam
Boil a syrup with the sugar.
Add the grapes to the boiling syrup.
If desired, add sliced apple or quince and cut-up orange peel.
Boil quickly at first.
Test for readiness by placing a small amount on a saucer to see if it jellies.
Use 'Hanepot' grapes before they are fully sweet for an alternative method.
Combine equal parts of sugar and grapes in a preserving pan with a few cups of water.
Stew for half an hour.
Skim off all the seeds.
Add the sugar.
Optionally add sliced stewing apples.
Boil briskly while stirring constantly with a wooden spoon.
Continue boiling until it reaches a jelly-like consistency.
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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Grape + appletop 1% of all pairsSmell alikestrongCooked together1,659 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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Grape + orangetop 6% of all pairsSmell alikemoderateCooked together1,771 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Apple + orangetop 7% of all pairsSmell alikestrongCooked together2,230 recipes
Shared aroma: beta-damascenone (apple, rose).
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Sugar + appletop 18% of all pairsSmell alikelowCooked together16,478 recipes
Shared aroma: beta-damascenone (apple, rose).
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Sugar + orangetop 20% of all pairsSmell alikelowCooked together19,212 recipes
Shared aroma: beta-damascenone (apple, rose).
Sugar and apple 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
- Grapes
- Provide the main fruit, pectin and flavour that set the jam.
- Sugar
- Sweetens the jam and helps it thicken and set as it boils.
The step that matters
Continue boiling until it reaches a jelly-like consistency. Sugar and pectin only set at a high enough concentration, so under-boiling leaves a runny jam while over-boiling can scorch it. Testing on a cold saucer shows when it has reached setting point.
Swap the apple
The recipe marks apple as optional. How well each one fits the dish's main ingredients (grape, sugar, orange):
- Vanillafits about as well
- Applethe original
- Figfits about as well
- Pineapplefits about as well
Fit is the average pairing score against grape, 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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