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Dessert

Watermel Preserves

Preserves made from watermelon rind boiled with sugar, water, and lemon.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Sugar and lemon are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Watermel Preserves

Ingredients

Directions

Prepare the rind

  1. Cut the watermelon in half and remove the soft inside, leaving only the firm white rind.

  2. Scrape off the green outside and cut the rind into desired shapes like hearts or squares.

  3. Boil the rind pieces in enough water to cover them, adding fresh lemon skins for color.

  4. Once tender, remove the pieces and let them cool in dishes.

Make the syrup and preserve

  1. Make a syrup by dissolving 1 pound of sugar in 1 teacup of water for each pound of melon.

  2. Add the melon to the hot syrup and boil until clear.

  3. Add slices of lemon for flavor.

  4. When the melon is transparent, remove it with a skimmer and boil the syrup down until thick.

  5. Pour the thick syrup over the fruit in 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. 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

Watermelon rind
Provides the firm, bulky texture that holds its shape through long simmering in syrup.
Sugar
Sweetens the preserve and, as it thickens the syrup, helps preserve the rind and make it clear.
Lemon
Adds acidity and bright flavor that balances the sweetness of the syrup.

The step that matters

Boiling the syrup down until thick. If the syrup is not reduced enough it stays thin and runny; if overcooked it turns hard or caramelised. Sugar concentration is what preserves the fruit, so the syrup must reach a thick, syrupy stage before jarring.

“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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