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Dessert

Orange Marmalade

A preserved citrus spread made from sweet and bitter oranges, lemons, water, and sugar.

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

  1. Cut the fruit into small pieces.

  2. Add the water and let it soak for 36 hours.

Cook and bottle

  1. Put the mixture on the stove and boil for 3 hours.

  2. Add the sugar and boil for 1 hour more.

  3. Bottle the marmalade.

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 + bitter orangetop 17% of all pairs
    Smell alikelow
    Cooked together23 recipes

    Shared aroma: acetal (cream, earthy).

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

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

  4. Bitter orange + lemontop 19% of all pairs
    Smell alikelow
    Cooked together21 recipes

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

  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

Sweet oranges
Provide the main fruit body, sweetness, and aroma for the marmalade.
Bitter oranges
Add sharp, bitter flavor and natural pectin that helps the marmalade set.
Lemons
Add acidity and additional pectin that helps the marmalade gel.
Sugar
Sweetens the marmalade and helps it thicken and set as it cooks.

The step that matters

Add the sugar and boil for 1 hour more. Sugar must dissolve fully and the mixture must reach a concentration that allows gelling. Boiling too briefly can leave the marmalade runny, while overcooking can darken and harden it.

Swap the bitter orange

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

  1. Limefits better
  2. Vanillafits better
  3. Blueberryfits better
  4. Bitter orangethe original

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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