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Fruit Jellies

Fruit jellies are made by boiling fruit, straining, and sweetening the juice with sugar.

From an old cookbook · modernised transcription
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Why it works: Apple and sugar are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 16,478 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓

Fruit Jellies

Ingredients

Directions

Prepare the fruit

  1. Cut the fruit into pieces and remove any defective cores.

  2. Add enough water to just cover the fruit and boil gently until tender.

  3. Turn the fruit into a straining bag and let it drain for 3-4 hours or overnight.

Make the jelly

  1. Measure the juice and add an equal amount of sugar.

  2. Boil the juice for 20 minutes, skimming off any foam.

  3. Add the hot sugar to the juice and boil for an additional 10 minutes.

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

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

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

Fruit
Provides the pectin and natural acids that allow the juice to set into a jelly.
Sugar
Adds sweetness and helps the juice thicken and set as it boils.

The step that matters

Boiling the juice with sugar. Sugar and pectin-acid balance must reach the setting point to form a firm gel. Boiling too briefly leaves the jelly runny, while overboiling can make it stiff or caramelised.

“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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