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Clear Apple Jelly

A clear jelly made from stewed apples, water, sugar, and lemon juice.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 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 ↓

Clear Apple Jelly

Ingredients

Directions

Prepare the juice

  1. Wash the apples and cut them into small pieces without peeling or coring.

  2. Stew the apples with the water for about 1 hour, covered if possible.

  3. Strain the mixture through a fine cloth or jelly bag.

Make and jar the jelly

  1. Boil the strained juice with the sugar for about 45 minutes, skimming as needed.

  2. Add the lemon juice just before finishing, boil again, and pour into very dry jars.

  3. Once cool, seal the jars as you would for jam.

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 the natural pectin and tart flavour that set the jelly once the juice is boiled.
Preserving sugar
Sets the jelly and preserves it, while adding sweetness and body to the juice.
Lemon juice
Adds acidity that brightens the flavour and helps the pectin set.

The step that matters

Boiling the strained juice with the sugar. Boiling for the full time concentrates the juice and lets the pectin and sugar reach the level needed to gel. Stopping early leaves a runny jelly, while overcooking can make it dull and tough.

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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