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Amber Marmalade

A fruit marmalade made from orange, grapefruit, lemon, water, and sugar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 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 ↓

Amber Marmalade

Ingredients

Directions

Prepare the fruit

  1. Thinly shave the orange, grapefruit, and lemon, discarding seeds and cores.

  2. Measure and add three times the quantity of water to the fruit.

  3. Let the mixture stand in an earthen bowl overnight.

Cook the marmalade

  1. Boil the mixture for 10 minutes.

  2. Let the mixture stand again overnight.

  3. Add 1 pint of sugar and boil steadily for nearly 2 hours 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. Orange + grapefruittop 1% of all pairs
    Smell alikestrong
    Cooked together233 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  3. Grapefruit + lemontop 4% of all pairs
    Smell alikestrong
    Cooked together184 recipes

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

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

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

  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

Sugar
Sweetens the marmalade and, as it boils down, helps it set into a jelly.
Orange
Supplies the main bitter-sweet flavour and natural pectin from peel and pith.
Lemon
Adds acidity, which brightens the flavour and supports gel formation.
Grapefruit
Adds bitterness and extra pectin-rich peel for setting.

The step that matters

Boil steadily until it jellies. Sugar and pectin only set when enough water has evaporated and the mixture reaches the right concentration. Stopping too early leaves a runny marmalade, while overcooking can make it stiff and dull in flavour.

Swap the grapefruit

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

  1. Grapefruitthe original
  2. Limefits about as well
  3. Vanillafits less well
  4. Blueberryfits less well

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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