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Dessert

Water-melon Preserves

Preserves made from watermelon rinds, grape leaves, alum, and ginger water, sweetened with sugar syrup.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Grape and ginger are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 1,037 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Water-melon Preserves

Ingredients

Directions

Prepare the rinds

  1. Peel the outer green from watermelon rinds, leaving about ¼ inch of the firm white part.

  2. Cut the rinds into uniform pieces.

  3. In a kettle, layer the rinds with grape leaves and alum, then cover with hot water.

  4. Simmer for 2 hours.

  5. Drain the rinds and cover them with weak ginger water, then simmer for 3 more hours.

  6. Drain again.

Make the syrup and preserve

  1. Prepare a syrup with 1¼ pounds of sugar and 1 pint of water for every pound of fruit.

  2. Boil the syrup for 10 minutes, skimming constantly.

  3. Add the rinds to the syrup and simmer until tender.

  4. Remove the rinds with a skimmer and pack them in cans.

  5. Boil the syrup until thick, then pour over the rinds in the cans and seal.

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. Grape + gingertop 13% of all pairs
    Smell alikemoderate
    Cooked together1,037 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  2. Ginger + sugartop 17% of all pairs
    Smell alikelow
    Cooked together14,054 recipes

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

  3. Grape + sugartop 23% of all pairs
    Smell alikelow
    Cooked together7,490 recipes

    Shared aroma: beta-damascenone (apple, rose).

Ginger and sugar barely smell alike, yet cooks put them together in 14,054 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 rinds
Form the bulk of the preserve, becoming tender and translucent as they absorb the syrup.
Sugar
Sweetens the preserve and, at high concentration, helps preserve the rinds and thicken the syrup.
Alum
Firms the rind tissue so it stays crisp rather than turning mushy during long simmering.

The step that matters

Simmering the rinds until tender. Rinds cooked too briefly stay tough, while overcooking breaks them down; the firm white flesh needs steady simmering and a check for tenderness before the syrup is added.

Swap the grape

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

  1. Lemonfits better
  2. Orangefits better
  3. Limefits better
  4. Grapethe original

Fit is the average pairing score against ginger, 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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