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 ↓
Preserved Citron
Ingredients
Directions
Prepare the citron
Pare the citron melons and cut them into half-moon shaped pieces, about ½ inch thick.
Boil the citron pieces in soda water until tender, when a straw will pass through them.
Skim the citron pieces and lay them in weak alum water for 3 hours.
Transfer the citron pieces to cold water for another hour.
Make the syrup
In a pot, combine 1 quart of water and 4 pounds of sugar.
Boil the syrup and remove the scum.
When the syrup is clear, add the citron and let it remain until the sugar has penetrated thoroughly.
Pack and seal
Pack the citron in jars.
Boil the syrup until it is ropy, then pour it into the jars.
Flavor the syrup with extract of ginger and add 1 tablespoon of extract of lemon peel to each quart jar.
Seal the jars as soon as filled, using paper wet in egg.
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.
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Ginger + lemontop 5% of all pairsSmell alikestrongCooked together5,154 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Melon + gingertop 7% of all pairsSmell alikemoderateCooked together342 recipes
Shared aroma: methyl 2-methylbutyrate (fruity, apple).
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Melon + lemontop 14% of all pairsSmell alikemoderateCooked together362 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Sugar + gingertop 17% of all pairsSmell alikelowCooked together14,054 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked 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 preserve, becoming tender and translucent as it candies in the syrup.
- Sugar
- Preserves the fruit and sweetens it as it penetrates the citron pieces.
- Soda water
- Softens the citron during boiling so it becomes tender enough to be penetrated by syrup.
- Weak alum water
- Firms the citron pieces so they hold their shape through long cooking and soaking.
The step that matters
Boil the syrup until it is ropy. Boiling concentrates the sugar so the syrup reaches a high enough sugar content to preserve the fruit. Undercooked syrup stays thin and can let the preserve spoil.
Swap the melon
How well each one fits the dish's main ingredients (sugar, ginger, lemon):
- Orangefits better
- Limefits better
- Mangofits better
- Melonthe original
Fit is the average pairing score against sugar, ginger, lemon. 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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