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Preserve

To Preserve Apples Another Way

Apples are preserved in acidulated syrup after being boiled in lemon and alum water.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Syrup and sugar 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 ↓

To Preserve Apples Another Way

Ingredients

Directions

Prepare the apples

  1. Peel the apples and scoop out the cores.

  2. Place the apples in a bowl of cold water with lemon juice and alum.

Scald and rinse

  1. In a copper preserving pan, scald the apples in the acidulated water without boiling, just simmering.

  2. Once warmed through, drain the apples and rinse with cold water.

Pack and seal

  1. Pack the apples into bottles without jamming and fill with slightly acidulated syrup.

  2. Cork the bottles and tie them down.

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. Syrup + sugartop 6% of all pairs
    Smell alikestrong
    Cooked together5,842 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  2. Apple + lemontop 14% of all pairs
    Smell alikemoderate
    Cooked together7,551 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  3. Apple + sugartop 18% of all pairs
    Smell alikelow
    Cooked together16,478 recipes

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

  4. Lemon + sugartop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

  5. Lemon + syruptop 20% of all pairs
    Smell alikelow
    Cooked together2,235 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

Apple and sugar 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

Apples
Provide the fruit that softens and holds its shape when gently scalded in syrup.
Lemon juice
Adds acidity that brightens the flavour and helps the apples keep their colour.
Alum
Firms the apple flesh so it holds its shape during scalding and preserving.
Sugar syrup
Sweetens the fruit and fills the bottles to preserve the apples in liquid.
Citric acid
Acidifies the syrup, adding tartness and supporting the preserving liquid.

The step that matters

Scalding without boiling. Boiling breaks the apples down into mush, while gentle simmering softens them just enough. Keeping the water below a rolling boil preserves texture and shape in the bottles.

Swap the apple

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

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

Fit is the average pairing score against lemon, syrup, 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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