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Dessert

Peach Jelly

A preserved peach jelly made by boiling peaches, kernels, 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, stone, and slice the peaches.

  2. Put the peaches and kernels into a stone jar.

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

  4. Strain the mixture to obtain peach juice.

Make the jelly

  1. Add the juice of 1 lemon for every pint of peach juice.

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

  3. Heat the sugar until very hot.

  4. Add the hot sugar to the juice and boil for 20 minutes.

  5. Bring to a boil and 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 juice and natural pectin that set the jelly.
Sugar
Sweetens the jelly and helps it set into a firm gel.
Lemon juice
Adds acidity that brightens flavour and supports gel formation.
Peach kernels
Add a subtle almond-like aroma to the peach juice.

The step that matters

Boiling the juice with the sugar for 20 minutes. Boiling concentrates the juice and sugar so the pectin and acid can form a gel. Boiling too briefly leaves the jelly runny, while overcooking can make it dense and sticky. Removing it from heat promptly stops further 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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