Why it works: Sugar and ginger are a kitchen classic. They rank in the top 17% of all ingredient pairs, and cooks put them together in 14,054 recipes. Both carry 1-penten-3-one, which smells fish, pungent. The science ↓
To Preserve Citrons
Ingredients
Directions
Prepare the citrons
Soak the citrons in water overnight.
Boil the citrons until tender enough to run a straw through them.
Cut the citrons in half and remove the pulp, leaving the rind intact.
Make the syrup and preserve
Place the citrons in a bowl and cover with double-refined sugar for 2–3 days.
After 2 days, pour off the syrup.
Boil the sugar, citrons, and 2–3 tablespoons of water together for 15 minutes.
Boil the syrup with 1 pound of sugar.
Skim the mixture.
Pour the hot syrup over the citrons.
If the syrup is not rich enough, repeat the boiling process.
Prepare the ginger and finish
Soak the ginger in water for 3 days.
Scrape the ginger.
Boil the ginger in a little thin syrup.
Add the ginger to the fruit when the preserving syrup is boiled for the last time.
Once cooled, cover with paper and bladder.
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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Sugar + gingertop 17% of all pairsSmell alikelowCooked together14,054 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
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
- Citrons
- Provide the main fruit, whose rind becomes tender and candied through repeated sugar syrup treatment.
- Double-refined sugar
- Draws water out of the fruit and preserves it, creating a thick, sweet syrup that sets the rind.
- White ginger
- Adds a warm, aromatic spice flavour that complements the sweet citrus rind.
The step that matters
Boiling the syrup until rich enough. Sugar concentration must be high enough to preserve the fruit. If the syrup is too thin, the citrons may spoil, so the boiling must be repeated until it is rich.
“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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