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
Dissolve the isinglass as directed for Orange Jelly, but without cinnamon and using lemon peel instead of orange peel.
Strain the lemon juice and mix it with the water and enough sugar to sweeten it, more sugar than for orange jelly.
Combine the mixture with the dissolved isinglass and bring it to a boil.
Set and serve
Strain through a fine sieve and pour into molds.
Once cold, the jelly will set.
To unmold, dip the mold in warm water.
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
- Isinglass
- Gelling agent that sets the liquid into a firm, wobbly jelly when cooled.
- Lemon juice
- Provides the sharp, acidic flavour that defines the jelly.
- Sugar
- Sweetens the tart lemon juice to balance its acidity.
The step that matters
Combine and bring to a boil. Isinglass must be fully dissolved into the hot mixture before cooling, because undissolved gelatin-like protein will not set evenly and leaves a grainy or weak jelly.
“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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