Why it works: Apple and lemon are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 7,551 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Apple Jelly
Ingredients
Directions
Prepare the apples
Wipe the apples, cut off the stalks, and halve them.
Mix the apples in a basin with a small quantity of cold water and lemon juice as you cut them.
Drain the apples and place them in a preserving pan.
Add just enough water to float the apples.
Add the juice of 2 lemons.
Make the jelly
When the apples are soft, strain the juice through a sieve without pressing.
Weigh the juice and add the same weight of crushed sugar.
Boil in the pan for 15 minutes.
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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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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Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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 natural pectin and acid that help the juice set into a jelly.
- Crushed sugar
- Sweetens the jelly and helps it set firm when boiled with the juice.
- Lemon juice
- Adds acidity that supports pectin setting and keeps the apples from browning.
The step that matters
Strain without pressing. Pressing the apples forces cloudy pulp and solids through the sieve, which makes the jelly cloudy. Letting the juice drip through alone keeps it clear.
Swap the lemon
How well each one fits the dish's main ingredients (apple, sugar):
- Pearfits better
- Vanillafits better
- Apricotfits better
- Lemonthe 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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