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 ↓
Port Wine Jelly
Ingredients
Directions
Make the jelly
Combine sugar, port wine, and gelatine in a pan; stir until dissolved.
Add the thinly pared rind and strained juice of the lemons, along with the whipped egg whites; whisk well.
Simmer gently for 5 minutes without stirring.
Pour the mixture through a jelly bag rinsed in hot water.
Set
Once cool, pour into a china mold to 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).
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Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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Egg + sugartop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
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Port wine + lemontop 21% of all pairsSmell alikemoderateCooked together1,100 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
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Port wine + sugartop 24% of all pairsSmell alikelowCooked together805 recipes
Shared aroma: guaiacol (smoky, sweet).
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
- Port wine
- Provides the main flavor and the wine liquid that the jelly sets in.
- Egg whites
- Clarify the jelly as they set and collect impurities, leaving it clear.
- Gelatine
- Sets the liquid into a firm, sliceable jelly as it cools.
- Lemons
- Add acidity and brightness that balance the sweetness of the port and sugar.
- Loaf sugar
- Sweetens the jelly and balances the tartness of the lemon and wine.
The step that matters
Simmer gently without stirring. Stirring a mixture containing egg whites breaks up the clarifying raft and makes the jelly cloudy. Gentle simmering lets the whites bind impurities so they can be filtered out cleanly through the jelly bag.
Swap the lemon
How well each one fits the dish's main ingredients (port wine, egg, sugar):
- Figfits better
- Vanillafits better
- Pearfits about as well
- Lemonthe original
Fit is the average pairing score against port wine, egg, sugar. 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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