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Peach Marmalade

A sweet preserve made by cooking peaches with sugar and lemon juice.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Peach and lemon work together. They rank in the top 12% of all ingredient pairs, and cooks put them together in 947 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓

Peach Marmalade

Ingredients

Directions

Prepare

  1. Peel and stone the peaches, then cut them into small pieces.

Make the marmalade

  1. Heat the fruit slowly, stirring often to prevent burning.

  2. Boil for 24 hours, then add the sugar.

  3. When nearly done, add the lemon juice and chopped peach kernels.

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. Peach + lemontop 12% of all pairs
    Smell alikemoderate
    Cooked together947 recipes

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

  2. Peach + sugartop 17% of all pairs
    Smell alikelow
    Cooked together2,308 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).

Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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

Peaches
Provide the fruit base and pectin-free bulk that the sugar thickens into a spreadable mass.
Sugar
Sweetens the marmalade and helps it set into a thick, spreadable texture as it cooks down.
Lemon juice
Adds acidity that brightens the flavour and supports gel formation.
Peach kernels
Contribute a distinctive almond-like aroma to the finished marmalade.

The step that matters

Stirring while the fruit heats. Fruit with sugar is thick and sticks to the base of the pan, so frequent stirring during slow heating prevents scorching, which would give a burnt flavour to the whole batch.

Swap the lemon

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

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

Fit is the average pairing score against peach, 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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