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Dessert

Apple Marmalade

Apple marmalade is a sweet preserve made from apples, sugar, water, and optional lemon peel.

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 ↓

Apple Marmalade

Oven, in the book's wordsA cool oven

Ingredients

Directions

Prepare the apples

  1. Scald the apples until they can be pulped from the core.

Make the syrup

  1. Dip the sugar in water and boil until it forms a thick syrup.

Cook the marmalade

  1. Add the apple pulp to the syrup and let it simmer for 15 minutes over high heat.

  2. Add a little grated lemon peel to improve the flavor, if desired.

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. Sugar + lemontop 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

Apples
Provide the pulp that forms the body of the marmalade.
Sugar
Sweetens the marmalade and, when boiled with water, forms the thick syrup that holds the pulp.
Lemon peel
Adds aromatic citrus flavor to the marmalade.

The step that matters

Simmering the pulp in the syrup. Apple pulp contains water and pectin, and cooking it over high heat for the stated time lets excess moisture evaporate so the mixture thickens rather than staying loose. Stirring helps prevent sticking and scorching on the bottom of the pan as the sugar concentrates.

Swap the lemon

The recipe marks lemon as optional. 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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