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 ↓
Preserved Crabapples
Ingredients
Directions
Prepare the apples
Select small yellow apples, leaving stems on.
Combine 1 pound of sugar with the apples and a bag of spices in a pot.
Boil the apples until tender, then remove with a perforated skimmer.
Measure the juice and use 1 pint of juice for every pound of sugar.
Make the syrup and preserve
Boil the spices again with the syrup and add the juice of a large lemon.
When the syrup thickens, boil the apples in the syrup for 15 minutes.
Transfer the apples to jars and pour the boiling syrup over them.
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).
-
Apple + sugartop 18% of all pairsSmell alikelowCooked together16,478 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Sugar + lemontop 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
- Small yellow apples
- Provide the fruit that is cooked into tender pieces and preserved in syrup.
- Sugar
- Sweetens the fruit and, as a thick syrup, helps preserve it.
- Lemon juice
- Adds acidity that brightens the flavor and balances the sweetness of the syrup.
The step that matters
Boil the apples in the syrup only after the syrup thickens. Boiling the fruit in syrup that is not yet thickened can leave it watery and less preserved. Letting the syrup reduce first concentrates the sugar, which helps the apples hold their shape and keep well in the jars.
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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