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Dessert

Crab Apple Jelly

A preserve made from crab apples, sugar, and lemon juice, cooked until thickened.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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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 ↓

Crab Apple Jelly

Ingredients

Directions

Extract the juice

  1. Place the quartered crab apples in a kettle and add cold water until it nearly covers the apples.

  2. Cook slowly until the apples are soft.

  3. Mash the apples and drain through a coarse sieve without squeezing.

  4. Allow the juice to drip through the bag.

Make the jelly

  1. Boil the juice for 20 minutes.

  2. Add an equal quantity of hot sugar.

  3. Boil for an additional 5 minutes.

  4. Skim off any foam.

  5. Pour the jelly into glasses.

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 + lemontop 14% of all pairs
    Smell alikemoderate
    Cooked together7,551 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  2. Crab + lemontop 16% of all pairs
    Smell alikemoderate
    Cooked together387 recipes

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

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

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

  4. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

    Shared aroma: 2-nonenal (fatty, green).

  5. Crab + sugartop 19% of all pairs
    Smell alikemoderate
    Cooked 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
Their natural pectin and acid help the juice set into a firm jelly.
Granulated sugar
Sweetens the jelly and helps it set by binding water and firming the gel.

The step that matters

Boil the juice for 20 minutes before adding sugar. Boiling concentrates the juice and activates the natural pectin from the apples. Adding sugar too early, or skipping this boil, can leave the jelly runny because the pectin has not been concentrated enough to gel.

Swap the lemon

The recipe marks lemon as optional. How well each one fits the dish's main ingredients (crab, apple, sugar):

  1. Pearfits better
  2. Quincefits better
  3. Plumfits better
  4. Lemonthe original

Fit is the average pairing score against crab, 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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