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Dessert

Orange Marmalade

A citrus preserve made from 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. Remove the white part from the oranges and lemons, saving the yellow rinds.

  2. Grind the oranges, lemons, and rinds using a meat grinder.

  3. Add 3 quarts of water and let the mixture stand overnight.

Cook the marmalade

  1. In the morning, cook the mixture until tender.

  2. Add 3 quarts of sugar and cook until it jellies.

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 pulp that give marmalade its characteristic flavor and pectin.
Lemons
Add acidity and extra pectin, helping the mixture set.
Sugar
Sweetens the marmalade and helps it thicken and set as it cooks.

The step that matters

Cook until it jellies. Sugar must be added to a tender mixture and cooked long enough to reach the gel point. Undercooking leaves it runny, 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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