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
Cook the apples
Peel and core the apples, then cut them into small pieces.
Place the apples in a saucepan with 3 ounces of sugar and ½ cup of water.
Wash the lemon, then grate the yellow rind over the apples.
Cut the lemon in half and squeeze the juice over the apples, straining out the seeds.
Bring the saucepan to a boil and cook the apples until tender, stirring occasionally.
Strain, set and mold
In a small saucepan, dissolve 1 ounce of gelatine in ½ cup of cold water over low heat.
Once the apples are soft, strain them through a sieve into a bowl.
Stir the dissolved gelatine into the apple puree until smooth.
If desired, add ½ teaspoon of cochineal to color part of the apple mixture.
Rinse a 1½ pint mold with boiling water, then with cold water before pouring in the mixture.
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
- Form the bulk of the puree and provide natural pectin that helps the jelly firm.
- Lump sugar
- Adds sweetness and body to the puree.
- Gelatine
- Sets the puree into a firm, sliceable jelly as it cools.
- Lemon
- Adds acidity to balance the sweetness and fragrant oils from the rind.
The step that matters
Dissolve the gelatine fully before stirring it in. Gelatine must be completely dissolved over low heat and stirred into the warm puree until smooth. Undissolved grains or lumps will not set evenly and leave a gritty, uneven jelly.
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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