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Dessert

Orange Marmalade,

A preserve made from Seville oranges, lemons, water, and sugar, simmered until thick.

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 ↓

Orange Marmalade,

Ingredients

Directions

Prepare the fruit

  1. Cut the oranges and lemons into very thin slices, removing the seeds.

  2. Place the seeds in a basin with 1 pint of cold water.

  3. Put the sliced fruit into the remaining 11 pints of cold water and let it stand for 24 hours.

Cook the marmalade

  1. Transfer the mixture to a preserving pan and boil slowly until tender, about 2 to 3 hours.

  2. Add the sugar and continue cooking until the marmalade reaches the desired consistency.

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

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

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

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

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

Seville oranges
Provide the bitter peel and pectin that give marmalade its characteristic flavour and set.
Sugar
Sweetens the marmalade and helps it set as it cooks and thickens.
Lemons
Add extra acidity and pectin, supporting a bright flavour and a good set.

The step that matters

Add the sugar and cook to the desired consistency. Sugar should be added only after the peel is fully tender, because it hardens the peel and slows softening. Cooking until the mixture reaches the right concentration lets pectin, sugar and acid form a gel as it cools.

“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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