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Dessert

Citron Preserves

Citron preserves made by boiling citron with ginger, sugar, water, and lemon slices.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Ginger and lemon 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

Make the syrup

  1. Boil ginger root in water to extract flavor, then discard the root.

  2. Add sugar to the water to make a rich syrup, using 1 pound of sugar for each pound of citron.

  3. Skim the syrup thoroughly.

Cook the citron

  1. Add the citron to the syrup and boil until transparent, skimming as needed.

  2. If the syrup is not thick enough, continue cooking.

  3. Pour the syrup over the citron and add sliced lemons.

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. Ginger + lemontop 5% of all pairs
    Smell alikestrong
    Cooked together5,154 recipes

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

  2. Ginger + sugartop 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).

Ginger and sugar 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 preserve and becomes translucent as it cooks in the syrup.
Sugar
Makes a thick syrup that preserves the citron and gives it sweetness.
Lemons
Add acidity and a bright citrus flavor to the sweet syrup.

The step that matters

Boiling the citron until transparent. Cooking the citron slowly in the sugar syrup lets sugar gradually replace water in the fruit, which makes it clear and firm. Skimming keeps the syrup clean and clear.

Swap the lemon

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

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

Fit is the average pairing score against ginger, sugar. 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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