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Dessert

Preserved Citron

A preserved citron made by soaking, cooking, and sweetening with sugar syrup and spices.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 11 ingredients
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Why it works: Cinnamon and clove match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 14,189 recipes. Both carry ethyl cinnamate, which smells sweet, balsamic. The science ↓

Preserved Citron

Ingredients

Directions

Prepare the citron

  1. Cut the citron in halves, turn cut side down, slice into pieces a little more than an inch wide, peel, seed, and cut into inch-size pieces.

  2. Soak the citron overnight in cold water (1 quart of water for every quart of fruit) with dissolved alum.

  3. Rinse the citron in salted water (1 teaspoon of salt for 1 quart of water) and cook for 40 minutes in fresh warm water (1 quart of water for 1 quart of citron).

Make the syrup

  1. Make a syrup by boiling 6 pounds of sugar in 1 pint of water with 2 ounces of sliced ginger root.

  2. Soak the ginger in cold water for easier scraping.

  3. Slice the ginger, add 3 cups of cold water, bring to a boil, and use 2 cups for the syrup, discarding the rest.

  4. Boil the syrup for about 10 minutes.

  5. Tie half an ounce of stick cinnamon, 1 teaspoon of whole cloves, and ½ teaspoon of allspice in cheesecloth and cook in the syrup.

Cook and store

  1. Add the drained citron to the syrup and cook slowly for 30 minutes.

  2. Transfer the citron to a stone jar.

  3. Add 2 thinly sliced lemons cooked for 15 minutes in ½ cup of cold water (use the water) and boil for 30 minutes, skimming as needed.

  4. Pour the syrup over the citron.

  5. Optionally, add the spices and ginger root.

  6. When cold, add 1 thinly sliced orange.

  7. Store in a cold 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. Cinnamon + clovetop 1% of all pairs
    Smell alikestrong
    Cooked together14,189 recipes

    Shared aroma: ethyl cinnamate (sweet, balsamic).

  2. Clove + allspicetop 1% of all pairs
    Smell alikestrong
    Cooked together7,874 recipes

    Shared aroma: estragole (anise, licorice).

  3. Cinnamon + allspicetop 1% of all pairs
    Smell alikestrong
    Cooked together5,536 recipes

    Shared aroma: estragole (anise, licorice).

  4. Ginger + cinnamontop 1% of all pairs
    Smell alikestrong
    Cooked together6,380 recipes

    Shared aroma: estragole (anise, licorice).

  5. Ginger + clovetop 1% of all pairs
    Smell alikestrong
    Cooked together6,038 recipes

    Shared aroma: estragole (anise, licorice).

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 simmers in syrup.
Granulated sugar
Sweetens the preserve and, at high concentration, helps preserve the fruit.
Alum
Firms the citron's texture so the pieces hold their shape during long cooking.
Ginger root
Adds a warm, aromatic pungency that flavors the syrup.
Lemons
Add acidity and bright flavor that balances the sweet syrup.

The step that matters

Soak the citron in alum water overnight. Alum forms firming bonds with pectin in the fruit's tissue, so the pieces stay firm rather than turning soft and mushy during long simmering in syrup. Using too much alum can leave a harsh, metallic taste, so the stated amount matters.

Swap the lemon

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

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

Fit is the average pairing score against sugar, ginger, cinnamon, clove, allspice, orange. 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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