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Dessert

Combination Apple and Grape Jelly

A jelly made by combining apple juice, grape juice, and sugar, cooked to 214°F and tested with a saccharometer.

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 cooks put them together in 1,659 recipes. Both carry 2-isobutyl-3-methoxypyrazine, which smells green bell pepper, earthy. The science ↓

Combination Apple and Grape Jelly

Ingredients

Directions

Prepare the jelly

  1. Combine apple juice and grape juice in a large pot.

  2. Add granulated sugar and stir until dissolved.

Cook and set

  1. Cook the mixture until it reaches 214°F (100°C) on a thermometer.

  2. Check the consistency using a saccharometer; it should read 28 degrees.

  3. Pour the jelly into sterilized jars and seal.

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 + grapetop 1% of all pairs
    Smell alikestrong
    Cooked together1,659 recipes

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

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

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

  3. Grape + sugartop 23% of all pairs
    Smell alikelow
    Cooked together7,490 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

Granulated sugar
Provides sweetness and, at high concentration, helps the jelly set and keep.
Apple juice
Supplies the main liquid and natural pectin that help the jelly gel.
Grape juice
Adds liquid, flavor and color to the jelly.

The step that matters

Cooking to 214°F (100°C). Water boils off as the mixture cooks, concentrating sugar and pectin. Reaching the set point is what makes the jelly gel when cooled; stopping early leaves it runny, while overcooking can make it stiff and sugary.

Swap the grape

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

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