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 ↓
A Good Lemon Jelly
Ingredients
Directions
Prepare
Soak the gelatine in cold water for at least 2 hours.
Pour boiling water over the soaked gelatine.
Make the jelly
Add sugar and stir in a double boiler until dissolved.
Add lemon juice and strain the mixture.
Pour into molds and refrigerate 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, wobbly jelly as it cools.
- Sugar
- Adds sweetness and helps balance the sour lemon flavour.
- Lemon juice
- Adds acidity and bright lemon flavour.
The step that matters
Soak the gelatine fully before heating. Gelatine must hydrate in cold water so it dissolves evenly when hot liquid is added. Unhydrated gelatine can form lumps or set unevenly, leaving a grainy or rubbery texture.
“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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