Why it works: Pepper and sugar are a kitchen classic. They rank in the top 32% of all ingredient pairs, and cooks put them together in 19,401 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Red Pepper Jelly
Ingredients
Directions
Prepare
Chop the ripe red peppers and place them in a granite pan.
Set the pan in a kettle of cold water over high heat.
Make the jelly
Boil until the juice is fully extracted.
For every pint of juice, add 1 pound of sugar and boil until thickened.
Pour into small tumblers.
Serve
Serve with cold meats.
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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Pepper + sugartop 32% of all pairsSmell alikelowCooked together19,401 recipes
Shared aroma: 2-nonenal (fatty, green).
Pepper and sugar barely smell alike, yet cooks put them together in 19,401 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
- Ripe red peppers
- Provide the main flavor and juice that the jelly is made from.
- Sugar
- Sweetens the juice and helps it thicken into a jelly when boiled.
The step that matters
Boiling with sugar until thickened. Sugar and pectin-containing juice must reach a sufficient concentration to set. Boiling too briefly leaves the jelly runny, while overboiling can make it stiff or caramelize the sugar.
“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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