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Dessert

Apple and Grape Jelly

A jelly made by boiling equal parts apple and grape juice with sugar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 3 ingredients
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Why it works: Apple and grape match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and 1,656 recipes mention both. Both carry 2-isobutyl-3-methoxypyrazine, which smells green bell pepper, earthy. The science ↓

The recipe

Ingredients

Directions

Prepare the juice

  1. Strain equal quantities of apple and grape juice.

  2. Boil the juice for 20 minutes.

Add the sugar

  1. While boiling, heat the sugar.

  2. Add the heated sugar to the boiling juice.

  3. Boil for a few more 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 aroma chemistry they share, and how many recipes mention both.

  1. Apple + grapetop 1% of all pairs
    Aroma overlapstrong
    Mentioned together1,656 recipes

    Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).

  2. Apple + sugartop 9% of all pairs
    Aroma overlaplow
    Mentioned together16,440 recipes

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

  3. Grape + sugartop 12% of all pairs
    Aroma overlaplow
    Mentioned together7,449 recipes

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

Apple and sugar share little aroma chemistry, yet 16,440 recipes mention both: they likely 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

Sugar
Sweetens the jelly and, with the fruit acid and pectin, helps it set firm.
Apple juice
Supplies natural pectin and acidity that help the jelly set.
Grape juice
Adds the main flavor and color, with acidity that supports setting.

The step that matters

Add the heated sugar to the boiling juice. Keep the juice boiling when the sugar goes in. Boiling drives off water so the sugar concentration rises enough for the pectin and acid to set the jelly. Cooling the juice slows this.

“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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