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Dessert

Apple Jelly

A sweet preserve made from boiled apples, water, sugar, and lemon, cooled and set into a jelly consistency.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Apple and lemon are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 7,551 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓

Apple Jelly

Ingredients

Directions

Prepare the apples

  1. Cut the apples into pieces without peeling or removing the cores, only removing the stalks and eyes.

  2. Add the water.

  3. Boil or bake until the mixture becomes a pulp.

  4. Pour the pulp into a jelly bag placed near the fire to thicken as it cools.

Make the jelly

  1. Add sugar and lemon juice to the liquid.

  2. Boil until it reaches a thick jelly consistency.

  3. Test the jelly by placing a small amount on a plate to check thickness.

  4. Strain the jelly again through the bag or a piece of muslin.

Pot and store

  1. Pour the jelly into molds or pots.

  2. Let it cool.

  3. Cover with tissue paper.

  4. Store in a dry place.

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

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

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

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

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

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

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 pectin and natural acid that help the jelly set and firm as it cools.
Sugar
Sweetens the jelly and, with boiling, helps it thicken into a set gel.
Lemon juice
Adds acidity that supports pectin setting and brightens the flavour.

The step that matters

Boil until a thick jelly consistency. Sugar and acid only gel properly once enough water has evaporated and the pectin reaches the right concentration. Undercooking leaves a runny jelly, while overcooking can make it tough or cloudy.

Swap the lemon

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

  1. Pearfits better
  2. Vanillafits better
  3. Apricotfits better
  4. Lemonthe original

Fit is the average pairing score against apple, 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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