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Dessert

Crab Apple Marmalade

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

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 Marmalade

Ingredients

Directions

Prepare the fruit

  1. Core the crab apples but do not peel them.

  2. Boil the cores in water for 1 hour and strain the liquid.

  3. Place the pulped fruit in a pot with a little water and cook until well broken down.

  4. Pass it through a colander to separate the skins.

Make the marmalade

  1. Combine the pulped fruit with the strained water from the cores and boil until very thick.

  2. Add ¾ pound of sugar for each pound of fruit and the juice of 3 lemons for every 3 pounds of fruit.

  3. Boil for 45 minutes.

Test and finish

  1. To test for thickness, place a spoonful on a saucer to cool.

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
Provide pectin and natural acidity that help the marmalade set and thicken.
Sugar
Sweetens the marmalade and helps it thicken and set as the water evaporates.
Lemon juice
Adds acidity that supports pectin setting and brightens the flavor.

The step that matters

Boil until very thick, then test on a cold saucer. Marmalade sets only when enough water has evaporated and the sugar and pectin concentrate. A spoonful cooled on a saucer shows whether it will gel. Stopping too early leaves it runny, while over-boiling makes it stiff and sticky.

Swap the apple

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

  1. Limefits better
  2. Orangefits better
  3. Raisinfits better
  4. Applethe original

Fit is the average pairing score against crab, sugar, lemon. 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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