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Dessert

Orange Marmalade

A preserved fruit spread made from bitter and sweet oranges, lemons, water, sugar, and whiskey.

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 the fruit

  1. Cut the oranges and lemons across the grain as finely as possible.

  2. Place the fruit in a deep dish with 4 quarts of water and let it stand for 36 hours.

Cook and set

  1. Boil the oranges and lemons in the same water for 2 hours.

  2. Add 8 pounds of white sugar and boil again for 1 hour or longer until it jellies.

  3. When nearly done, add ⅓ cup of whiskey to clarify the jelly.

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

    Shared aroma: acetal (cream, earthy).

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

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

  4. Bitter orange + lemontop 19% of all pairs
    Smell alikelow
    Cooked together21 recipes

    Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).

  5. 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

Bitter oranges
Provide the characteristic bitter peel and pectin that give marmalade its flavor and set.
Sweet oranges
Add sweetness and body to the fruit, balancing the bitterness of the bitter oranges.
Lemons
Add acidity and extra pectin, helping the marmalade brighten and set.
White sugar
Sweetens the marmalade and helps it thicken into a jelly as it boils.
Whiskey
Added near the end to help clarify the jelly, adding a subtle aroma.

The step that matters

Boiling until it jellies. The mixture must reach the point where pectin, sugar and acid form a gel. Stopping too early leaves it runny, while boiling too long can darken and stiffen it.

Swap the bitter orange

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

  1. Limefits better
  2. Vanillafits better
  3. Blueberryfits better
  4. Bitter orangethe original

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