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Dessert

Orange Marmalade

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

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 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, removing the seeds.

  2. Place the fruit in a jar with 4 quarts of cold water and let it sit for 36 hours.

Cook and finish

  1. Boil the mixture for 2 hours.

  2. Add 8 pounds of white sugar and continue boiling until it jellies.

  3. Just before removing from heat, stir in ⅓ cup of brandy or whisky to clarify 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 + brandytop 15% of all pairs
    Smell alikelow
    Cooked together2,706 recipes

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

  3. Bitter orange + orangetop 17% of all pairs
    Smell alikelow
    Cooked together23 recipes

    Shared aroma: acetal (cream, earthy).

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

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

  5. Sugar + brandytop 19% of all pairs
    Smell alikelow
    Cooked together11,939 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

Bitter oranges
Provide the pectin and bitter peel that give marmalade its characteristic set and flavour.
White sugar
Sweetens the marmalade and helps it set into a firm, spreadable gel as it boils.
Lemons
Add acidity and extra pectin, supporting a good set and bright flavour.
Brandy or whisky
Adds aroma and flavour; stirred in near the end, it is added off the heat's peak to preserve its character.

The step that matters

Testing for the set. Marmalade gels when sugar concentration and pectin reach the right balance at a boil. Undercooking leaves it runny, while overcooking can make it stiff and dark, so the jelling point must be judged carefully.

Swap the bitter orange

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

  1. Vanillafits better
  2. Figfits better
  3. Apricotfits better
  4. Bitter orangethe original

Fit is the average pairing score against orange, lemon, sugar, brandy. 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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