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Dessert

Preserved Watermelon Rind

A preserved watermelon rind made by soaking, boiling, and syruping with sugar, lime, and lemon.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Lime and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,289 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓

Preserved Watermelon Rind

Ingredients

Directions

Prepare the rind

  1. Cut the watermelon rind into 1‑inch squares, removing the peel and all pink parts.

  2. Soak the rind overnight in limewater (1 ounce lime to 2 quarts water).

  3. Let the rind stand for 2 hours in clear water.

  4. Drain the rind well.

  5. Drop the rind into boiling water and boil it rapidly for 10 minutes.

  6. Drain the rind again.

Make the syrup and cook

  1. Add the rind gradually to the syrup made by boiling together 3 cups sugar and 3 pints water.

  2. Add the juice of ½ lemon and 3 extra slices of lemon to the syrup.

  3. Cook until the melon is tender and transparent.

  4. Allow the mixture to cool.

Jar and seal

  1. Arrange the pieces attractively in jars, garnishing with lemon slices.

  2. Cover the jars with the syrup.

  3. Test the syrup temperature for 50° to 55°.

  4. Process and seal the jars.

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. Lime + lemontop 1% of all pairs
    Smell alikestrong
    Cooked together1,289 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

  2. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

  3. Lime + sugartop 29% of all pairs
    Smell alikelow
    Cooked together3,332 recipes

    Shared aroma: 1-penten-3-one (fish, pungent).

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

Watermelon rind
Forms the main body of the preserve, becoming tender and translucent as it cooks.
Lime
Limewater soak firms the rind so it keeps its shape through the long cooking.
Sugar
Sweetens the preserve and, in the syrup, replaces water in the rind to make it transparent.
Lemon juice
Adds acidity that brightens the sweet syrup and balances its flavour.

The step that matters

Cook until the melon is tender and transparent. Simmering in sugar syrup softens the rind and draws sugar into it, so the pieces turn clear. Stopping too early leaves them firm and opaque, while overcooking can make them mushy and cloudy.

Swap the lime

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

  1. Orangefits better
  2. Limethe original
  3. Vanillafits about as well
  4. Blueberryfits less well

Fit is the average pairing score against sugar, lemon. 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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