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 fruit
Wash and cut the apples into pieces without peeling them.
In a saucepan, combine the apples, sugar, water, and thinly cut lemon rind.
Boil gently until the apples are tender.
Make the jelly
Dissolve the gelatine in a little water.
Rub the cooked apples through a fine sieve.
Add the dissolved gelatine and stir occasionally until nearly set.
If desired, add pale green food coloring.
Pour the mixture into a wetted mold.
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.
-
Apple + lemontop 14% of all pairsSmell alikemoderateCooked together7,551 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Apple + sugartop 18% of all pairsSmell alikelowCooked together16,478 recipes
Shared aroma: beta-damascenone (apple, rose).
-
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 pectin and body, and the apple pulp that gives the jelly its flavour.
- Gelatine
- Sets the liquid into a firm, wobbly jelly as it cools.
- Sugar
- Sweetens the jelly and balances the tartness of the apples and lemon.
- Lemon rind
- Adds aromatic citrus oil and a bright, slightly sharp flavour.
The step that matters
Add the dissolved gelatine and stir occasionally until nearly set. Gelatine sets firmly as it cools, so if the mixture cools too far before pouring it can become lumpy or set unevenly in the mold. Stirring keeps it smooth and evenly distributed while it thickens.
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.
More apple jelly recipes
You might also like
Apple Pudding256 recipes
Lemon Cake228 recipes
Lemon Ice147 recipes
Lemon Sherbet103 recipesThe free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.