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Dessert

Amber Marmalade

A fruit marmalade made from orange, lemon, and grapefruit with sugar and water.

From an old cookbook · modernised transcription
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Why it works: Orange and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Amber Marmalade

Ingredients

Directions

Prepare the fruit

  1. Thinly shave the orange, lemon, and grapefruit, discarding seeds and fiber.

  2. Measure the fruit and add three times the amount of water.

  3. Let the mixture stand overnight in an earthen dish.

Cook and set

  1. The next morning, boil for 10 minutes.

  2. Let it stand another night.

  3. On the second morning, add an equal amount of sugar to the fruit mixture.

  4. Boil steadily until it jellies, stirring as little as possible.

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. Orange + lemontop 1% of all pairs
    Smell alikestrong
    Cooked together10,634 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  2. Orange + grapefruittop 1% of all pairs
    Smell alikestrong
    Cooked together233 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  3. Lemon + grapefruittop 4% of all pairs
    Smell alikestrong
    Cooked together184 recipes

    Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).

  4. Lemon + sugartop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

    Shared aroma: 2-nonenal (fatty, green).

  5. Orange + sugartop 20% of all pairs
    Smell alikelow
    Cooked together19,212 recipes

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

Lemon and sugar barely smell alike, yet cooks put them together in 53,532 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

Oranges
Provide the bulk of the bitter peel and pulp that gives marmalade its character.
Lemon
Adds acidity and natural pectin that helps the marmalade set.
Grapefruit
Adds bitterness and aromatic peel oils to the finished marmalade.
Sugar
Sweetens and helps the mixture reach a gel by binding water and aiding setting.

The step that matters

Boil steadily until it jellies. Sugar must be dissolved and the mixture boiled hard enough to reach the setting point, where pectin and acid form a gel. Stirring little avoids scorching and breaking the set.

Swap the grapefruit

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

  1. Grapefruitthe original
  2. Limefits about as well
  3. Vanillafits less well
  4. Blueberryfits less well

Fit is the average pairing score against orange, lemon, 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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