Why it works: Onion and mustard match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
India Pickles
Ingredients
Directions
Make the brine
Mix vinegar, salt, ginger, mace, onions, and brown sugar in a large pot, then bring the mixture to a boil and let it cool.
Transfer the cooled mixture to a stone jar.
Add the spices and rest
In a small bowl, mix curry powder, cayenne pepper, white pepper, mustard, and turmeric with a little vinegar until smooth.
Add this mixture to the jar without heating it.
Stir the contents of the jar every morning for three weeks.
Add small cucumbers, onions, cauliflower, or any other pickling vegetables as desired.
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 + mustardtop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Vinegar + mustardtop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Ginger + peppertop 9% of all pairsSmell alikestrongCooked together6,800 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Ginger + oniontop 9% of all pairsSmell alikemoderateCooked together7,595 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Vinegar
- Acts as the pickling liquid, preserving the vegetables and giving the pickle its sharp acidity.
- Salt
- Seasons the brine and draws moisture from the vegetables, helping them stay firm and preserved.
- Mustard
- Adds pungent heat and sharpness that deepens the flavour of the spiced brine.
- Turmeric
- Gives the pickle its characteristic yellow colour and a mild earthy bitterness.
- Brown sugar
- Balances the sharpness of the vinegar with sweetness and a little molasses depth.
The step that matters
Adding the spice mixture without heating it. Heating the curry, cayenne, mustard and turmeric can dull their aromas and turn bitter. Adding them cold to the cooled brine keeps their flavour fresh and bright over the three weeks of resting.
Swap the white pepper
How well each one fits the dish's main ingredients (vinegar, ginger, mace, onion, sugar, pepper, mustard):
- Allspicefits better
- Clovefits better
- Cinnamonfits better
- White pepperthe original
Fit is the average pairing score against vinegar, ginger, mace, onion, sugar, pepper, mustard. 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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