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Dessert

Orange Marmalade

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

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. Slice the oranges and lemons as finely as possible.

  2. Add 3 pints of cold water for each pound of fruit and let it stand for 3 days.

Cook and set

  1. Boil the mixture until the fruit is perfectly tender.

  2. Weigh the fruit again and add 1 lb of sugar for every lb of fruit.

  3. Boil for about 1 hour, or until a spoonful sets on a cold plate.

Jar

  1. Transfer to jars, seal tightly, and store in a cool place.

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. Lemon + sugartop 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).

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

Seville oranges
Provide the bitter peel and pectin that give marmalade its characteristic flavour and set.
Lemons
Add extra acidity and pectin, helping the marmalade gel and balancing sweetness.
White sugar
Sweetens the marmalade and, at high concentration, helps the mixture set when boiled.

The step that matters

Boil until a spoonful sets on a cold plate. Setting depends on pectin, sugar and acid reaching the right concentration. Undercooking leaves a runny marmalade, while overcooking can make it stiff and dark.

“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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