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Crab-apple Jelly

Crab-Apple Jelly is a preserve made by stewing crab apples, extracting juice, and combining it with sugar.

From an old cookbook · modernised transcription
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Why it works: Apple and sugar are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 16,478 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓

Crab-apple Jelly

Ingredients

Directions

Extract the juice

  1. Stew the crab-apples in minimal water, stirring often with a wooden spoon.

  2. When well cooked, pour into a jelly bag and let it drain overnight without squeezing.

  3. In the morning, measure the juice and weigh out 1 pound of sugar for each pint of juice.

  4. Divide the sugar into portions on pie plates.

Cook and set the jelly

  1. Heat the juice until it reaches a boil.

  2. Boil the juice for exactly 20 minutes.

  3. While the juice is boiling, heat the sugar until it hisses when added.

  4. Quickly stir in the hot sugar.

  5. Remove the mixture from heat immediately.

  6. Prepare glass jars by placing them in boiling water.

  7. Pour the jelly into the jars quickly.

Recipe from a historical cookbook (Internet Archive).

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.

  1. Apple + sugartop 18% of all pairs
    Smell alikelow
    Cooked together16,478 recipes

    Shared aroma: beta-damascenone (apple, rose).

  2. Crab + sugartop 19% of all pairs
    Smell alikemoderate
    Cooked together407 recipes

    Shared aroma: hexanal (grass, green).

  3. Crab + appletop 22% of all pairs
    Smell alikelow
    Cooked together343 recipes

    Shared aroma: 1-octen-3-ol (mushroom, earthy).

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
Their natural pectin and acid let the juice gel once cooked and boiled with sugar.
Sugar
Sweetens the juice and helps the mixture thicken into a firm, set jelly.

The step that matters

Adding the hot sugar and boiling the juice for exactly 20 minutes. Sugar must be heated until it hisses and stirred in quickly so it dissolves fully without cooling the juice. Boiling for the set time lets pectin and sugar reach the concentration needed to gel. Removing from heat promptly prevents over-thickening.

Swap the apple

How well each one fits the dish's main ingredients (crab, sugar):

  1. Raisinfits better
  2. Lemonfits better
  3. Vanillafits better
  4. Applethe original

Fit is the average pairing score against crab, 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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