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Orange Marmalade

A preserve made from orange peel chips, pulp, and sugar boiled together.

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. Rub the oranges with a damp cloth.

  2. Thinly peel the yellow part of the rind into slender chips.

  3. Boil the chips in 4 cups of water for 1 hour.

  4. Remove the chips from the water.

  5. Remove all skins from the oranges.

  6. Break up the pulp.

  7. Boil the pulp in 10 cups of water for 1 hour, stirring occasionally.

  8. Pour the mixture into a jelly bag.

  9. Strain the mixture.

Make the marmalade

  1. Combine the strained liquid and the boiled chips with their liquid in a pan with 10 lbs. of sugar.

  2. Boil for 15 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. Sugar + lemontop 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).

Sugar and lemon 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 rind for bitter chips and the pulp and juice that set with the sugar.
Sugar
Sweetens the marmalade and, when boiled, helps it set and preserves it.
Lemons
Add acidity that supports setting and brightens the flavor.

The step that matters

Boil the pulp and strain it fully. The pulp and skins contain pectin, which helps the marmalade set. Boiling extracts it into the liquid, and straining removes solids so the final texture stays smooth and clear.

“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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