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Dessert

Citron Preserves

Preserves made from citron, sugar, weak alum water, and ginger or lemon.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Sugar and ginger are a kitchen classic. They rank in the top 17% of all ingredient pairs, and cooks put them together in 14,054 recipes. Both carry 1-penten-3-one, which smells fish, pungent. The science ↓

Citron Preserves

Ingredients

Directions

Prepare the citron

  1. Slice the citron and cover it with weak alum water overnight.

  2. Boil the citron in clear water until tender.

Make the preserve

  1. Make a syrup with the sugar and add it to the citron.

  2. Boil slowly until the mixture is transparent.

  3. Add ginger root or sliced lemon while cooking to taste.

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. Sugar + gingertop 17% of all pairs
    Smell alikelow
    Cooked together14,054 recipes

    Shared aroma: 1-penten-3-one (fish, pungent).

Sugar and ginger barely smell alike, yet cooks put them together in 14,054 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

Citron
Forms the body of the preserve, becoming tender and translucent as it cooks.
Sugar
Sweetens the preserve and, as syrup, helps the fruit turn clear and glossy.

The step that matters

Boil slowly until the mixture is transparent. Boiling too hard can break the citron pieces apart and scorch the sugar, while slow cooking lets the sugar penetrate the fruit gradually so it becomes clear rather than cloudy.

“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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