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Fruit Jellies

Fruit jellies are made by boiling apples and quinces, extracting juice, and clarifying with sugar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Apple and quince 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 ↓

Fruit Jellies

Ingredients

Directions

Prepare the fruit

  1. Cut apples and quinces into 6-8 pieces without peeling.

  2. Place the cut fruit in a pan and cover with water.

  3. Bring to a boil without stirring.

  4. Cover and let simmer until soft.

  5. Transfer fruit to a sieve to drain the juice.

Clarify the juice

  1. Let the juice sit overnight in deep vessels.

  2. Decant from sediment.

  3. Heat the juice to boiling.

  4. Pour hot into glass jars, sealing immediately.

  5. For berries, boil with a small amount of water.

  6. Strain, and sterilize as above.

Make the jelly

  1. Mix juice with half its weight of sugar.

  2. Heat to boiling and skim.

  3. Filter through a flannel bag.

  4. Boil again until the jellying stage is reached.

  5. Cool with cold water and skim.

  6. Repeat until clarified.

  7. Continue boiling until ready.

  8. Pour into warmed glasses.

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 + quincetop 1% of all pairs
    Smell alikemoderate
    Cooked together506 recipes

    Shared aroma: ethyl isobutyrate (fruity, ethereal).

  2. Apple + sugartop 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).

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
Their natural pectin helps the juice set into a firm jelly.
Quinces
Their high pectin content adds setting strength to the jelly.
Sugar
Sweetens the juice and helps it set and keep once cooled.

The step that matters

Boil again until the jellying stage is reached. Pectin, acid and sugar only set together at the right concentration. Stopping early leaves a runny jelly, while boiling too long can make it stiff and cloudy.

Swap the quince

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

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