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To Preserve Quinces

A method for preserving quinces by boiling them with sugar and lemon until they become clear garnet.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Quince and lemon match in chemistry and in kitchens. They rank in the top 11% of all ingredient pairs, and cooks put them together in 336 recipes. Both carry trans-2-hexenal, which smells green, leafy. The science ↓

To Preserve Quinces

Ingredients

Directions

Prepare the quinces

  1. Pare, core, and quarter the quinces.

  2. Boil the parings, cores, and seeds in water for 20 minutes.

Poach the quinces

  1. Strain the mixture, then return the water to the pot.

  2. Simmer the quinces in the water until tender, about 5 to 10 minutes.

  3. Remove the quinces and set them on a dish.

Make the syrup and cook

  1. Add sugar and a little warm water to the pot.

  2. Boil until clear.

  3. Add all the quinces.

  4. Boil without stirring until they turn a clear garnet color, about 1 hour.

  5. Add the sliced lemons a few minutes before removing from heat.

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 + lemontop 11% of all pairs
    Smell alikestrong
    Cooked together336 recipes

    Shared aroma: trans-2-hexenal (green, leafy).

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

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

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

Quinces
Provide the main fruit, which softens when simmered and turns a deep garnet color in syrup.
Sugar
Sweetens the dish and thickens the syrup as it boils, helping preserve the fruit.
Lemons
Add acidity that brightens the flavor and balances the sweetness of the syrup.

The step that matters

Boil without stirring until garnet. Stirring can break up the tender quinces and cloud the syrup. Gentle, undisturbed boiling lets the fruit hold its shape and develop an even, clear color as the sugar concentrates.

Swap the quince

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

  1. Orangefits better
  2. Limefits better
  3. Vanillafits better
  4. Quincethe original

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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