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Dessert

Peach Jelly

A fruit preserve made from sliced peaches, peach 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 juice

  1. Pare, seed, and slice the peaches, then add the peach kernels.

  2. Place in a kettle, cover with water, and cook until tender.

  3. Strain the mixture and measure the juice.

Make the jelly

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

  2. Heat the sugar before adding it to the boiling juice.

  3. Let the juice boil for 20 minutes, then add the sugar and bring to a boil.

  4. Pour the mixture into jelly glasses.

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 flavour and the juice that becomes the jelly.
Peach kernels
Add a subtle almond-like aroma to the juice.
Lemon juice
Adds acidity, which brightens flavour and helps the jelly set.
Sugar
Adds sweetness and binds water so the juice thickens into a gel.

The step that matters

Heat the sugar before adding it to the boiling juice. Warm sugar dissolves quickly and keeps the juice at a steady boil, so the mixture does not cool and stall before it reaches the gel point.

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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