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Apple Marmalade

A preserve made from tart apples, lemon rind, lemon juice, sugar, and water.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 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 ↓

Apple Marmalade

Ingredients

Directions

Prepare the fruit

  1. Peel and core the apples, then place them in a preserving kettle with the cold water.

  2. Peel the yellow rind from the lemons and add it to the apples.

  3. Squeeze the juice from the lemons and set it aside.

Cook the marmalade

  1. Boil the apples until they are a pulp.

  2. Add the lemon juice and sugar to the apple mixture.

  3. Boil the marmalade for an additional 30 minutes or until it reaches the desired consistency.

Jar

  1. Pour the marmalade into jelly glasses and let it cool slightly before sealing.

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

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

  3. Lemon + sugartop 18% of all pairs
    Smell alikelow
    Cooked 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

Tart apples
Provide the pectin and bulk that cook down into the marmalade's body.
Sugar
Sweetens the marmalade and helps it set into a spreadable consistency.
Lemons
Add acidity and aromatic oils from the rind, balancing the sweetness.

The step that matters

Boil the marmalade until it reaches the desired consistency. Sugar and apple pectin only set properly once enough water has evaporated. Stopping too early leaves a runny spread, while over-boiling can scorch the sugar and darken the flavour.

Swap the lemon

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

  1. Pearfits better
  2. Vanillafits better
  3. Apricotfits better
  4. 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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