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Dessert

Citron Preserves

Preserves made from citron and lemon in sugar syrup, finished with ginger root.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 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. Pare and cut the citron into fancy shapes.

  2. Place the citron in a weak syrup and add the sliced lemon.

  3. Cook on the stove until the citron is tender.

Make the syrup and preserve

  1. Prepare a syrup by adding an equal amount of sugar to the fruit.

  2. Add the cooked fruit to the syrup.

  3. Boil slowly until clear.

  4. Skim the fruit into jars.

  5. Add some ginger root.

  6. Boil the syrup for an additional 10 minutes.

  7. Pour the syrup over the preserves.

  8. Seal the jars.

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. Lemon + sugartop 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 bulk of the preserve and becomes tender and translucent as it cooks in syrup.
Sugar
Sweetens the preserve and, at high concentration, helps preserve the fruit and set the syrup.
Lemon
Adds acidity and brightness to balance the sweetness of the syrup.
Ginger root
Adds aromatic warmth to the syrup.

The step that matters

Boil slowly until clear. Cooking the fruit gently in syrup lets sugar slowly replace the water in the citron, so it turns clear and tender. Boiling too hard can break the pieces apart and make the syrup cloudy.

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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