Why it works: Sugar and syrup match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 5,842 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Jelly, Liqueur
Ingredients
Directions
Prepare
Dissolve the isinglass in 1 pint of water, skimming off any scum.
Boil the loaf sugar with ½ pint of water to make a syrup, then skim it.
Make and set the jelly
Mix the syrup, lemon juice, and liqueur into the dissolved isinglass.
Pour the mixture through a fine sieve into a damp mold.
Set the mold in ice until the jelly is firm.
Unmold
If the jelly is too stiff, dip the mold in boiling water briefly before unmolding.
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 + syruptop 6% of all pairsSmell alikestrongCooked together5,842 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Syrup + lemontop 20% of all pairsSmell alikelowCooked together2,235 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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
- Isinglass
- Gelatin-like setting agent that gives the jelly its firm, wobbly structure.
- Loaf sugar
- Sweetens the jelly and adds body to the syrup.
- Lemon juice
- Adds acidity that brightens the sweetness of the jelly.
- Liqueur
- Provides the main flavour and aroma of the jelly.
The step that matters
Set the mold in ice until the jelly is firm. Isinglass sets as it cools, so the jelly needs to chill steadily until fully firm. Rushing this or leaving it at room temperature leaves a soft, unstable set that may not hold its shape when unmolded.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, syrup):
- Vanillafits better
- Raisinfits better
- Pearfits about as well
- Lemonthe original
Fit is the average pairing score against sugar, syrup. 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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