Why it works: Sugar and syrup match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 5,842 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Apple Jelly
Ingredients
Directions
Prepare the apples
Pare the apples, cut them into pieces and remove the cores.
Place the apples in a preserving pan and cover them with cold water.
Boil the apples for one hour.
Make the jelly
Drain the syrup through a fine sieve or jelly bag.
Measure the juice.
For every pint of juice, add ¾ pound of loaf sugar.
Boil the mixture together for 45 minutes, stirring to prevent burning and removing any scum that rises.
Optionally, add a little lemon rind while boiling.
Add strained lemon juice just before finishing.
Store
Store the jelly in small pots.
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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Sugar + syruptop 6% of all pairsSmell alikestrongCooked together5,842 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Apple + lemontop 14% of all pairsSmell alikemoderateCooked together7,551 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Apple + sugartop 18% of all pairsSmell alikelowCooked together16,478 recipes
Shared aroma: beta-damascenone (apple, rose).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Syrup + lemontop 20% of all pairsSmell alikelowCooked together2,235 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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
- Apples
- Provide the pectin and natural acid that let the juice set into a jelly.
- Loaf sugar
- Sweetens the jelly and, with boiling, helps it thicken and set.
- Lemon juice
- Adds acidity that brightens flavour and supports setting.
The step that matters
Boil the mixture for 45 minutes while stirring. Sugar and juice must reduce to the right concentration to set. Stirring prevents the sugar from scorching on the base of the pan, which would give a burnt taste and dark colour.
Swap the lemon
The recipe marks lemon as optional. How well each one fits the dish's main ingredients (apple, sugar, syrup):
- Vanillafits better
- Pearfits better
- Apricotfits better
- Lemonthe original
Fit is the average pairing score against apple, sugar, syrup. 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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