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Dessert

Citron Preserves

Citron preserves made by simmering citron and lemon in ginger water, then sweetening with sugar syrup.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Lemon and ginger match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 5,154 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓

Citron Preserves

Ingredients

Directions

Prepare the citron

  1. Peel the citron and cut it into convenient pieces.

  2. Scald the citron in weak ginger water until it can be pierced with a straw.

  3. Drain the citron well.

Make the syrup and cook

  1. Make a syrup by dissolving ¾ pound of sugar in a little water.

  2. Add the citron and sliced lemon to the syrup.

  3. Boil slowly until the citron is tender but not broken.

  4. Remove the citron and place it in jars or cans.

  5. Boil the syrup longer until it thickens.

Jar and store

  1. Pour the syrup over the citron.

  2. Seal or cover the jars tightly while hot.

  3. Store in a cool, dark place.

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. Lemon + gingertop 5% of all pairs
    Smell alikestrong
    Cooked together5,154 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

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

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

  3. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

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 main body of the marmalade and provides its bitter, aromatic peel and flesh.
Sugar
Dissolves into the syrup to sweeten the marmalade and help it thicken as it cooks down.
Lemon
Adds acidity and a bright flavor that balances the sweetness of the syrup.

The step that matters

Boil the syrup longer until it thickens. Sugar syrup thickens as water evaporates and its concentration rises. If it is not cooked long enough, the marmalade will stay thin and may spoil sooner in storage.

Swap the lemon

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

  1. Lemonthe original
  2. Orangefits about as well
  3. Limefits less well
  4. Vanillafits less well

Fit is the average pairing score against sugar, ginger. 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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