Why it works: Onion and olive are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 29,779 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
Uncooked Pickles
Ingredients
Directions
Prepare
Slice the pickles into ¼ inch thick slices.
Pack the slices in quart jars with thinly sliced onions and one hot red pepper per jar.
Add 1 tablespoon of salt and fill the jars with water.
Add ½ teaspoon of pulverized alum.
Soak and pack
Let the jars stand overnight, then drain and rinse the contents.
Refill the jars with pickles, add 2 tablespoons of olive oil, and fill with sharp vinegar.
Seal the jars.
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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Onion + olivetop 8% of all pairsSmell alikemoderateCooked together29,779 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Olive + vinegartop 10% of all pairsSmell alikemoderateCooked together12,297 recipes
Shared aroma: isoamyl acetate (banana, fruity).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pepper + olivetop 11% of all pairsSmell alikemoderateCooked together30,263 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Onion + vinegartop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Pickles
- Form the bulk of the jar and supply the crisp, briny texture of the finished pickle.
- Onions
- Add pungent flavor and a little sweetness that mellows as the pickle sits.
- Salt
- Draws water out of the pickle slices and seasons the brine.
- Pulverized alum
- Helps the pickle slices stay firm and crisp during brining.
- Sharp vinegar
- Provides the acidity that preserves the pickles and gives them their tang.
The step that matters
Soaking overnight, then draining and rinsing. Soaking in salted water pulls moisture out of the slices and firms them. Rinsing before repacking removes excess salt and alum so the final brine tastes balanced rather than harsh.
Swap the onion
How well each one fits the dish's main ingredients (pepper, olive, vinegar):
- Capsicumfits better
- Tomatofits better
- Mustardfits better
- Onionthe original
Fit is the average pairing score against pepper, olive, vinegar. 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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