Why it works: Grape and quince work together. They rank in the top 8% of all ingredient pairs, and cooks put them together in 96 recipes. Both carry ethyl isobutyrate, which smells fruity, ethereal. The science ↓
Grape Jelly
Ingredients
Directions
Make the jelly
Squeeze grapes through a fine sieve into a preserving pan.
Heat the juice over medium heat and reduce it by one third.
Add 1 pound of sugar for every 4 pounds of fruit and reduce further.
Just before removing from heat, stir in the juice of 2 lemons.
If desired, add boiled quinces or pears cut into quarters.
Pot and set
Pour the jelly into pots and leave uncovered for 5 to 6 days.
Replace any moist paper covering with dry paper until moisture evaporates.
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 + quincetop 8% of all pairsSmell alikemoderateCooked together96 recipes
Shared aroma: ethyl isobutyrate (fruity, ethereal).
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Lemon + quincetop 11% of all pairsSmell alikestrongCooked together336 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Grape + lemontop 14% of all pairsSmell alikemoderateCooked together2,412 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + quincetop 21% of all pairsSmell alikemoderateCooked together1,444 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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 juice and natural pectin that gives the jelly its body and set.
- Sugar
- Adds sweetness and helps the jelly set and keep by binding water.
- Lemon juice
- Adds acidity that brightens flavour and supports pectin gelling.
The step that matters
Stirring in lemon juice just before removing from heat. Acid helps pectin form a gel, but prolonged boiling can weaken pectin and dull the fresh flavour, so adding the juice at the end protects both set and taste.
Swap the quince
The recipe marks quince as optional. How well each one fits the dish's main ingredients (grape, sugar, lemon):
- Orangefits better
- Figfits better
- Vanillafits better
- Quincethe original
Fit is the average pairing score against grape, sugar, lemon. 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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