Why it works: Pepper and vinegar are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 27,814 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Pickled Sweet Red Pepper
Ingredients
Directions
Prepare the peppers
Wash the red peppers, cut a slice from the stem end, and remove all seeds and membranes.
Cut the peppers into thin strips using scissors.
Pour boiling water over the strips and let them stand for 3 minutes.
Drain the peppers and plunge them into ice water for 10 minutes.
Drain again and pack the peppers tightly into small glass jars.
Pickle and store
In a pot, boil 1 quart of vinegar with 2 cups of sugar for 15 minutes.
Pour the hot pickle mixture over the peppers until the jars overflow.
Cover, seal, and store the jars 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.
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Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Vinegar + sugartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
-
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
- Red peppers
- Provide the main vegetable, whose firm flesh softens slightly while holding its shape in the jar.
- Vinegar
- Acidifies the brine, giving the pickled peppers their tangy flavor and helping preserve them.
- Sugar
- Balances the vinegar's sharpness, adding sweetness to the pickling liquid.
The step that matters
Packing and covering the peppers with hot pickle mixture. Peppers must be packed tightly and fully covered by the hot brine so no air pockets or exposed pieces remain. Keeping the pieces submerged in acidic liquid limits spoilage and keeps the texture and color even.
“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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