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Dessert

Peach Jelly

A jelly made from peaches, lemon juice, and sugar, cooked until thick.

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 juice

  1. Crack the peach seeds, extract the kernels, and place them in a jar with the sliced peaches.

  2. Set the jar in a pot of water and stir occasionally until the fruit is tender.

  3. Strain the mixture to obtain the peach juice.

Make the jelly

  1. For each pint of peach juice, add the juice of one lemon and one pound of sugar.

  2. Heat the sugar until very hot, then add it to the boiling juice after it has boiled for twenty minutes.

  3. Bring the mixture to a boil and remove it from the 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 flavor and the pectin-bearing juice that gives the jelly its body.
Sugar
Sweetens the jelly and helps it set into a firm, spreadable gel.
Lemon juice
Adds acidity that brightens the flavor and supports gel formation.
Peach seeds
Kernels are steeped with the fruit to add a subtle almond-like aroma.

The step that matters

Adding the hot sugar to the boiling juice. Sugar must be heated before it goes in so the boil does not drop and the mixture keeps reaching the temperature needed to set. Removing it from the heat right away prevents overcooking, which can make the jelly stiff or sugary.

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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