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Dessert

Apple Jam

A jam made from sour apples, brown sugar, lemon juice and rind, and ginger, boiled until clear and yellow.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Lemon and ginger match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 5,154 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓

Apple Jam

Ingredients

Directions

Prepare

  1. Weigh equal amounts of brown sugar and sour apples.

  2. Pare, core, and finely chop the apples.

Make the jam

  1. Make a clear syrup with the sugar.

  2. Add the chopped apples, lemon juice, lemon rind, and ginger to the syrup.

  3. Boil until the apples look clear and yellow.

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. Lemon + gingertop 5% of all pairs
    Smell alikestrong
    Cooked together5,154 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

  2. Apple + gingertop 9% of all pairs
    Smell alikemoderate
    Cooked together1,424 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  3. Apple + lemontop 14% of all pairs
    Smell alikemoderate
    Cooked together7,551 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  4. Sugar + gingertop 17% of all pairs
    Smell alikelow
    Cooked together14,054 recipes

    Shared aroma: 1-penten-3-one (fish, pungent).

  5. Sugar + appletop 18% of all pairs
    Smell alikelow
    Cooked together16,478 recipes

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

Sugar and ginger barely smell alike, yet cooks put them together in 14,054 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

Brown sugar
Sweetens the jam and, once dissolved into a syrup, sets the base that the apples cook in.
Sour apples
Provide the bulk of the jam and natural pectin that helps it thicken and set.
Lemons
Add acidity that brightens flavour and supports pectin setting.
White ginger
Adds a warm, aromatic flavour to the jam.

The step that matters

Boil until the apples look clear and yellow. Cooking must continue until the fruit turns translucent and the mixture thickens. Stopping early leaves the jam runny, while overcooking can caramelise the sugar and make it dark and stiff.

Swap the apple

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

  1. Orangefits better
  2. Limefits better
  3. Mangofits better
  4. Applethe original

Fit is the average pairing score against sugar, lemon, ginger. 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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