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Dessert

Orange Marmalade

A preserve made from orange peel, pulp, and sugar, boiled until thick.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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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 ↓

Orange Marmalade

Ingredients

Directions

Prepare the oranges

  1. Carefully pare the yellow rind off the oranges.

  2. Remove the thick white rind.

  3. Squeeze the pulp through a sieve.

  4. Add ½ cup of water to the oranges.

  5. Set to boil.

  6. Add the yellow parings cut into pieces.

  7. Boil for 30 minutes or until soft.

Make the marmalade

  1. If desired, add the juice, pulp, and yellow peel of a lemon.

  2. Add 1 lb of sugar for every 1 lb of pulp.

  3. Boil for a few minutes.

  4. For a variation, add 1 quart of sliced rhubarb.

  5. Boil with the oranges.

Jar

  1. Put into jelly glasses.

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 + rhubarbtop 5% of all pairs
    Smell alikemoderate
    Cooked together299 recipes

    Shared aroma: 2-methoxy-4-vinylphenol (clove, smoky).

  3. Lemon + rhubarbtop 7% of all pairs
    Smell alikestrong
    Cooked together546 recipes

    Shared aroma: acetic acid (sour, vinegar).

  4. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

  5. Sugar + rhubarbtop 18% of all pairs
    Smell alikemoderate
    Cooked together1,852 recipes

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

Sugar and lemon 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 pulp, peel, and natural pectin that sets the marmalade.
Sugar
Sweetens the marmalade and helps it thicken and set as it boils.
Lemon
Adds acidity and extra pectin from its pulp and peel to help the marmalade set.
Rhubarb
Adds tartness and bulk as an optional variation.

The step that matters

Boil until the peel is soft. The yellow peel must be fully softened before sugar is added, because tough peel stays chewy in the finished marmalade. Pectin from the pulp and peel needs sustained boiling with sugar and acid to reach a gel set.

Swap the lemon

The recipe marks lemon as optional. How well each one fits the dish's main ingredients (orange, sugar, rhubarb):

  1. Vanillafits better
  2. Lemonthe original
  3. Figfits less well
  4. Blueberryfits less well

Fit is the average pairing score against orange, sugar, rhubarb. 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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