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.
Make a syrup by boiling the water, sugar, and lemon rind for 5 minutes.
Set and serve
Pour the syrup over the softened gelatine and stir until dissolved; add lemon juice and strain.
Turn the mixture into a moistened mold and chill.
Serve with cream and sugar or custard sauce.
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 sharpness of the lemon.
- Lemon juice
- Adds acidity that brightens the flavour of the jelly.
- Lemon rind
- Infuses the syrup with aromatic lemon oils while it boils.
The step that matters
Dissolving the gelatine in the syrup. Gelatine must be fully dissolved in hot syrup before the lemon juice is added and the mixture is chilled. Undissolved granules leave gritty, weak patches, and the jelly will not set 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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