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 ↓
Siberian Crab Apple Jelly
Ingredients
Directions
Prepare the apples
Wash the crab apples in two waters and spread them on a cloth-covered table.
Select the finest apples, cut off the stems, remove the blossom ends, and slice them into three pieces, including skins, cores, and seeds.
Weigh the apples.
Extract the juice
Combine the apples with 1 quart of cold water and 1 sliced lemon (seeds removed) in a porcelain preserving kettle.
Boil the mixture for 30 minutes.
Strain the mixture through a linen cloth, processing small quantities at a time.
Strain the juice again.
Measure 1 pint of juice.
Make and set the jelly
Add 1 pound of sugar to the preserving kettle.
Stir well.
Bring the mixture to a boil, skimming off any foam.
Boil for 5 minutes.
Pour the jelly into glasses lined with brandy-dipped writing paper.
Seal the glasses with metal covers once cool.
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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Crab + lemontop 16% of all pairsSmell alikemoderateCooked together387 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
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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).
-
Crab + sugartop 19% of all pairsSmell alikemoderateCooked together407 recipes
Shared aroma: hexanal (grass, 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
- Crab apples
- Provide the bulk of the fruit, along with natural pectin and tartness that help the jelly set.
- Sugar
- Sweetens the jelly and, with the cooked juice, helps it set into a firm gel.
- Lemon
- Adds acidity that supports pectin setting and brightens the flavor.
The step that matters
Boiling the juice with sugar. The jelly sets only when enough sugar and acid are concentrated by boiling. Too short a boil leaves it runny, while overcooking can make it stiff or darken its flavor. Skimming foam keeps the jelly clear.
Swap the apple
How well each one fits the dish's main ingredients (crab, lemon, sugar):
- Limefits better
- Orangefits better
- Raisinfits better
- Applethe original
Fit is the average pairing score against crab, lemon, 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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