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
Grate the lemons into refined sugar and press out the juice.
Make the jelly
Boil the isinglass with water until reduced to ½ quart.
Add the lemon juice and sweeten to taste.
Heat the mixture until very hot over a coal fire.
Pour into a glass or porcelain dish and let it set in a cool place.
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.
-
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
- Gelatin-like protein that sets the liquid into a firm jelly as it cools.
- Lemons
- Supply the acidity and bright lemon flavour, plus juice for the jelly.
- Refined sugar
- Sweetens the jelly and balances the sharpness of the lemon juice.
The step that matters
Boil the isinglass with water until reduced to ½ quart. Isinglass only sets if it is fully dissolved in hot liquid. Boiling it down concentrates the gelling protein, so the jelly firms properly once cooled rather than staying loose.
“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.
More lemon jelly recipes
You might also like
Lemon Cake228 recipes
Lemon Ice147 recipes
Lemon Sherbet103 recipes
Lemon Custard64 recipesThe free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.