Why it works: Sugar and lemon 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 ↓
White Currant Jelly
Ingredients
Directions
Cook the jelly
Combine equal weights of fruit and sugar in a pot.
Boil the mixture rapidly for about 10 minutes, stirring constantly.
Add the juice of one lemon for every 4-5 pounds of fruit after boiling.
Boil for 2 more minutes.
Skim off any foam that forms on the surface.
Test the set
To test if the jelly is done, place a small amount on a cold plate; it should 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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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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White currant + lemontop 20% of all pairsSmell alikelowCooked together10 recipes
Shared aroma: alpha-pinene (pine, turpentine).
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White currant + sugartop 29% of all pairsSmell alikelowCooked together59 recipes
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
- White currants
- Provide natural pectin and acid, which help the jelly gel.
- Sugar
- Adds sweetness and helps the jelly set and keep by binding water.
- Lemon juice
- Adds acidity that supports pectin setting and brightens the flavour.
The step that matters
Testing for set. Jelly sets only when enough sugar and pectin are concentrated by boiling. Stopping too early leaves a runny jelly, while overcooking can make it stiff. The cold plate test shows whether it is ready.
Swap the white currant
How well each one fits the dish's main ingredients (sugar, lemon):
- Orangefits better
- Limefits better
- Vanillafits better
- White currantthe original
Fit is the average pairing score against sugar, lemon. 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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