Why it works: Cinnamon and clove match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 14,189 recipes. Both carry ethyl cinnamate, which smells sweet, balsamic. The science ↓
Pickled Onions
Ingredients
Directions
Prepare the onions
Remove the outer skins from the onions until they are perfectly white and clean.
Soak the onions in brine for three days, then drain.
Pack the jar
In a jar, layer the onions three inches deep, sprinkling with horse-radish, cinnamon bark, cloves, and cayenne pepper.
Repeat the layering until the jar is filled, using ½ teaspoon cayenne pepper, 2 teaspoons chopped horse-radish, 2 teaspoons cloves, and ¼ cup cinnamon bark for each gallon of pickles.
Add the vinegar
Bring the vinegar to a boil, then add 1 quart of brown sugar for each gallon of vinegar.
Pour the hot vinegar over the onions.
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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Cinnamon + clovetop 1% of all pairsSmell alikestrongCooked together14,189 recipes
Shared aroma: ethyl cinnamate (sweet, balsamic).
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Horse + radishtop 4% of all pairsSmell alikemoderateCooked together529 recipes
Shared aroma: 2-methylbutyraldehyde (malty, chocolate).
-
Clove + peppertop 5% of all pairsSmell alikestrongCooked together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
-
Radish + cinnamontop 8% of all pairsSmell alikestrongCooked together69 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Radish + clovetop 9% of all pairsSmell alikestrongCooked together196 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Onions
- Form the main body of the pickle, staying firm and crisp as they absorb the flavours.
- Vinegar
- Provides the sharp acidity that preserves the onions and gives the pickle its tang.
- Brown sugar
- Balances the sharpness of the vinegar with sweetness and adds depth to the syrup.
- Horse-radish
- Contributes pungent, sharp heat that infuses into the onions as they pickle.
The step that matters
Soak the onions in brine for three days. The brine draws water out of the onions and seasons them, so they stay firm and crisp rather than soft. Skipping or shortening the soak leaves the onions wetter and less seasoned, which dilutes the vinegar and weakens the final pickle.
Swap the onion
How well each one fits the dish's main ingredients (egg, horse, radish, cinnamon, clove, pepper, sugar):
- Mustardfits better
- Capsicumfits better
- Beetrootfits better
- Onionthe original
Fit is the average pairing score against egg, horse, radish, cinnamon, clove, pepper, sugar. 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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