Why it works: Lemon and sherry are a kitchen classic. They rank in the top 17% of all ingredient pairs, and cooks put them together in 3,273 recipes. Both carry 1-octen-3-ol, which smells mushroom, earthy. The science ↓
Isinglass Jelly
Ingredients
Directions
Prepare
Soak the isinglass in cold water until soft.
In a saucepan, combine the sugar, lemon rind, lemon juice, sherry, and cold water.
Add the boiling water and stir until the sugar dissolves.
Clarify and set
Whisk the egg whites until stiff and fold them into the mixture along with the crushed shells.
Pour the mixture into a mold and refrigerate until set, about 1 hour.
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 + sherrytop 17% of all pairsSmell alikemoderateCooked together3,273 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Lemon + eggtop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + sherrytop 22% of all pairsSmell alikelowCooked together4,141 recipes
Shared aroma: guaiacol (smoky, sweet).
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
- Patent isinglass
- Gelatinous protein that sets the liquid into a firm jelly when chilled.
- Egg whites
- Whipped foam traps impurities so the jelly can be clarified to a clear finish.
- Sugar
- Adds sweetness and body to the jelly.
- Lemon juice
- Adds acidity that brightens the flavour and balances the sweetness.
- Sherry
- Adds aroma and a wine flavour to the jelly.
The step that matters
Whisk the egg whites until stiff and fold them in. Stiff whites with crushed shells collect cloudy particles as the mixture is heated and then drained, so the jelly clears. Underwhipped whites or deflating them during folding leaves the jelly cloudy.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, egg, sherry):
- Vanillafits better
- Figfits better
- Pineapplefits better
- Lemonthe original
Fit is the average pairing score against sugar, egg, sherry. Candidates are from the same food group and used in at least 100 recipes.
“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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