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Dessert

Plum Preserves

A sweet preserve made by boiling plums with sugar and water, repeated over several days.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 2 ingredients
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Why it works: Sugar and syrup match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 5,842 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓

Plum Preserves

Ingredients

Directions

Prepare the plums

  1. Wash the plums and prick them.

  2. Place the plums in a stone jar.

Make the syrup

  1. Combine equal weights of sugar and water to create a thick syrup.

  2. Boil the syrup and skim it.

  3. Pour the syrup over the plums.

  4. Cover the plums with a plate.

  5. Drain off the syrup the next day.

  6. Boil the syrup again and skim it.

  7. Pour the syrup back over the plums.

  8. Repeat this process for three to four days.

Cook and store

  1. Place the plums and syrup in a preserving kettle.

  2. Boil slowly for half an hour.

  3. Transfer to stone jars.

  4. Cover with paper like jellies.

  5. Seal in cans.

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 + syruptop 6% of all pairs
    Smell alikestrong
    Cooked together5,842 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  2. Sugar + plumtop 21% of all pairs
    Smell alikelow
    Cooked together2,313 recipes

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

  3. Plum + syruptop 22% of all pairs
    Smell alikelow
    Cooked together143 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Plums
Provide the fruit that is cooked down into the jam.
Sugar
Sweetens the fruit and, as a thick syrup, draws moisture out to preserve it.

The step that matters

Repeating the syrup drain and boil over three to four days. Sugar syrup must be reboiled and poured back repeatedly so the fruit gradually absorbs sugar. Skipping rounds leaves the plums under-sweetened and less well preserved, while boiling the syrup to a thick consistency concentrates the sugar enough to inhibit spoilage.

Swap the plum

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

  1. Vanillafits better
  2. Raisinfits better
  3. Pearfits better
  4. Plumthe original

Fit is the average pairing score against sugar, syrup. 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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