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Dessert

Orange Marmalade

A preserve made by boiling oranges, lemons, water, and sugar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 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. Slice the oranges and lemons thinly.

  2. Cover the fruit with 4 quarts of cold water and let it stand for 24 hours.

Cook

  1. Boil the mixture for 1 hour, then let it stand for another 24 hours.

  2. Measure an equal quantity of sugar to the fruit mixture and boil for 30 to 40 minutes.

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

Oranges
Provide the bitter peel and fruit that give marmalade its characteristic flavor and body.
Lemons
Add acidity and extra pectin-rich peel to help the marmalade set.
Sugar
Sweetens the marmalade and, when boiled with the fruit, helps it thicken and set.

The step that matters

Boiling with the sugar. Sugar must be boiled with the fruit long enough to reach the concentration needed for a gel. Boiling too briefly leaves the marmalade runny, while overcooking can darken and harden it.

“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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