Why it works: Sugar and lemon are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Preserved Citron
Ingredients
Directions
Macerate and cook
Combine the citron and sugar in a preserving kettle and let it stand overnight.
In the morning, simmer the mixture for 2 hours.
Add the lemon juice and lemon rind, then simmer for an additional 15 minutes.
Jar
Pour the mixture into Perfect Seal Jars and seal immediately.
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 + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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
- Provides the bulk of the preserve, with its firm pith and flesh softening during long simmering.
- Granulated sugar
- Draws moisture out of the citron and preserves the fruit, forming a thick, sweet syrup.
- Lemons
- Adds acidity and aroma that brighten the sweetness and add balance to the preserve.
The step that matters
Simmering after adding the lemon juice and rind. Acid and pectin in lemon help the citron set and keep its structure, so the final simmer should be done properly rather than cut short.
“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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