Why it works: Lemon and sugar 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 the juice
Juice the lemons, avoiding any peel.
Strain the juice through a flannel bag to ensure it is clear.
Make the jelly
In a saucepan, combine the lemon juice with water and sugar, and heat until the sugar dissolves.
When nearly cold, stir in the prepared isinglass until fully dissolved.
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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Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
Lemon and sugar 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
- Lemon juice
- Provides the sharp acidity and flavour that defines the jelly.
- Prepared isinglass
- Gelling agent that sets the liquid into a firm, wobbly jelly as it cools.
- Sugar
- Adds sweetness that balances the lemon's acidity.
The step that matters
Stir in the isinglass when nearly cold. If the juice is still very hot, the gelling agent can be weakened and the jelly may fail to set firmly. If it is too cold, the isinglass may set in lumps before it blends 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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