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Dessert

Peach Jelly

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

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Lemon and peach 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

Make the jelly

  1. Boil 3 pints of water and 1 pound of sugar together, skimming well.

  2. Add dissolved gelatine, lemon juice, and beaten egg whites, then bring to a boil.

  3. Skim off scum.

  4. Boil until it jellies.

  5. Pour jelly into a mold.

  6. Strain, adding any scum back to the mold.

Extract the peach juice

  1. Heat the peaches and cracked kernels in boiling water until the fruit is well broken.

  2. Strain the mixture.

Sweeten the juice

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

  2. Measure the juice again.

  3. Add 1 pound of sugar for every pint of juice.

  4. Heat the sugar until very hot.

  5. Add it to the juice after it has boiled for twenty minutes.

  6. Bring to a boil.

  7. 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. Lemon + peachtop 12% of all pairs
    Smell alikemoderate
    Cooked together947 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  2. Sugar + peachtop 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

Sugar
Provides sweetness and, with acid, helps the juice thicken into a jelly.
Peaches
Supply the main peach flavour and the juice that becomes the jelly.
Lemon juice
Adds acidity that brightens the flavour and supports setting.
Peach kernels
Add a subtle almond-like aroma to the peach juice.

The step that matters

Boil until it jellies. Sugar and acid set the jelly only when the liquid is concentrated enough. Stopping too early leaves it runny, while boiling too long can make it stiff and dull in flavour.

Swap the lemon

How well each one fits the dish's main ingredients (sugar, peach):

  1. Vanillafits better
  2. Apricotfits better
  3. Pearfits better
  4. Lemonthe original

Fit is the average pairing score against sugar, peach. 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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