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Quinces, Preserved Whole

Preserve whole quinces in syrup and apple jelly.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Quince and apple work together. They rank in the top 1% of all ingredient pairs, and cooks put them together in 506 recipes. Both carry ethyl isobutyrate, which smells fruity, ethereal. The science ↓

Quinces, Preserved Whole

Ingredients

Directions

Prepare

  1. Pare the quinces and scoop out the cores without opening the fruit.

  2. Put the quinces into boiling water and simmer gently until tender but not broken.

  3. Drain and cool the quinces.

Make the syrup

  1. Boil 1 pound of sugar for every pound of fruit in the reserved liquid.

  2. Pour the syrup over the quinces and let them sit overnight.

  3. Add enough apple jelly to cover the fruit and dissolve it in the syrup.

Finish and test

  1. Boil the quinces quickly until they look clear, then transfer them to jars.

  2. Test the syrup on a plate; if it jellies when cold, it's ready. If not, boil until it does.

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. Quince + appletop 1% of all pairs
    Smell alikemoderate
    Cooked together506 recipes

    Shared aroma: ethyl isobutyrate (fruity, ethereal).

  2. Sugar + appletop 18% of all pairs
    Smell alikelow
    Cooked together16,478 recipes

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

  3. Quince + sugartop 21% of all pairs
    Smell alikemoderate
    Cooked together1,444 recipes

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

Sugar and apple barely smell alike, yet cooks put them together in 16,478 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

Ripe quinces
The main fruit, which softens during simmering and becomes tender and translucent in the syrup.
Sugar
Sweetens the fruit and, at high concentration, helps preserve it and thicken the syrup.
Apple jelly
Adds pectin and acidity, helping the syrup set when it cools.

The step that matters

Testing the syrup for a cold set. Syrup must reach the right sugar and pectin concentration to gel when cold. Boiling too little leaves it runny, while boiling too long can make it stiff or sugary, so testing on a cold plate tells you when it is ready.

Swap the quince

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

  1. Pearfits better
  2. Vanillafits about as well
  3. Apricotfits about as well
  4. Quincethe original

Fit is the average pairing score against sugar, apple. 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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