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 ↓
Lemon Jelly
Ingredients
Directions
Prepare
Soften the gelatine in cold water.
In a pot, boil the sugar, lemon rind, and boiling water for 5 minutes to make a syrup.
Make the jelly
Dissolve the softened gelatine in the hot syrup.
Add the lemon juice and strain through cheesecloth.
Pour into a mould and chill until set.
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
- Gelatine
- Sets the liquid into a firm, sliceable jelly as it cools.
- Sugar
- Sweetens the syrup and balances the sharp lemon flavour.
- Lemon juice
- Provides the main lemon flavour and acidity.
- Lemon rind
- Adds aromatic lemon oils to the syrup for fragrance.
The step that matters
Dissolve the softened gelatine in the hot syrup. Gelatine must dissolve fully without boiling, since prolonged high heat weakens its setting power. Stir until no grains remain so the jelly sets evenly.
“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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