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Dessert

Peach Jelly

A preserved fruit spread made from peaches, lemon juice, and sugar.

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 Jelly

Ingredients

Directions

Prepare the fruit

  1. Pare, pit, and slice the peaches, then place them in a jar.

  2. Crack one-third of the pits and add them to the peaches.

  3. Heat in a kettle of boiling water, stirring occasionally until the fruit is well broken.

  4. Strain the mixture and measure the juice.

Make the jelly

  1. For each pint of juice, add the juice of 1 lemon.

  2. Add 1 pound of sugar for each pint of juice.

  3. Heat the sugar until very hot.

  4. Add the hot sugar to the juice after it has boiled for 20 minutes.

  5. Let it come to a boil again, then remove from heat immediately.

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. Lemon + sugartop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

    Shared aroma: 2-nonenal (fatty, green).

Lemon and sugar 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 and flavor that give the jelly its character.
Sugar
Sweetens the jelly and, with the fruit acid and pectin, helps it set.
Lemon juice
Adds acidity that brightens flavor and supports pectin gelling.

The step that matters

Remove from heat immediately after the second boil. Boiling too long after the sugar is added can break down pectin and darken the color, so the jelly may fail to set or taste cooked.

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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