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 the pickles
Slice the pickles into ¼ inch thick slices.
Pack the pickles in quart jars with sliced onions and a hot red pepper.
Add salt and fill the jars with water.
Add alum and let the jars stand overnight.
Drain the water and rinse the pickles.
Finish and seal
Fill the jars with pickles, add olive oil, and top 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).
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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 provide the crisp, briny base of the pickles.
- Pulverized alum
- Helps the pickles stay firm and crisp during soaking.
- Coarse sea salt
- Draws water out of the pickles and seasons them during the soak.
- Sharp vinegar
- Adds acidity that gives the pickles their tart flavor.
The step that matters
Add alum and let the jars stand overnight. Alum is a firming agent, and it works best when dissolved in the soaking water before the overnight rest. Measure it carefully, since too much can leave a bitter or chalky taste. The overnight soak lets it act evenly through the pickles.
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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