Why it works: Clove and pepper match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 17,451 recipes. Both carry ethyl octanoate, which smells fruity, wine. The science ↓
Pickled Onions
Ingredients
Directions
Prepare the onions
Peel the small white onions.
Cover them with brine made from 14 cups of coarse sea salt and 2 quarts of boiling water.
Let stand for 2 days.
Drain the onions.
Cover them with more brine.
Let stand for another 2 days.
Drain again.
Pickle and jar
Make a new brine.
Heat it to boiling.
Add the onions.
Boil for 3 minutes.
Pack the onions into jars with peppercorns, cloves, bits of bay leaf, and slices of red pepper.
Fill the jars to overflowing with scalded vinegar mixed with 1 cup of sugar for every gallon of vinegar.
Cork the jars while hot.
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.
-
Clove + peppertop 5% of all pairsSmell alikestrongCooked together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + clovetop 13% of all pairsSmell alikemoderateCooked together16,901 recipes
Shared aroma: 2-nonanone (fruity, floral).
-
Onion + vinegartop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Small white onions
- Form the pickled vegetable itself, becoming tender and mild as they cure.
- Coarse sea salt
- Draws water out of the onions during the brining, firming them and seasoning them.
- Vinegar
- Provides the acidity that preserves the onions and gives the pickle its sharp flavour.
- Sugar
- Balances the sharpness of the vinegar with a touch of sweetness.
The step that matters
Draining and re-brining over four days. Salt draws water out of the onions and seasons them slowly. Skipping the full soak or the second brine leaves the onions too wet and too harsh, and they will not pickle evenly.
Swap the onion
How well each one fits the dish's main ingredients (clove, pepper, sugar, vinegar):
- Capsicumfits better
- Mustardfits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against clove, pepper, sugar, 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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