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Dessert

Peach Jam

A sweet preserve made from peaches, sugar, lemon juice, and peach kernels.

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 Jam

Ingredients

Directions

Macerate

  1. Combine the peaches and sugar in a jar and let sit for 12 hours until the sugar dissolves.

Cook

  1. Boil the mixture quickly, stirring frequently.

  2. Before removing from heat, add the strained lemon juice and blanched peach kernels.

  3. Cook for 20 to 30 minutes until the jam thickens.

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 body and natural pectin-bearing pulp that gives the jam its base.
Sugar
Sweetens the jam and, with cooking, helps it thicken and keep.
Lemon juice
Adds acidity that brightens flavor and supports gel setting.

The step that matters

Boil the mixture quickly, stirring frequently. Sugar and fruit can scorch on the bottom of the pot if left unstirred, and a rapid boil is needed to evaporate water and reach the gel point. Frequent stirring prevents burning and even thickening.

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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