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 ↓
Hodge Podge
Ingredients
Directions
Prepare
Combine the chopped green tomatoes, onions, and green peppers in a large bowl.
Add the brown mustard seed and coarse sea salt to the mixture.
Stand and cover
Let the mixture stand for three days.
After three days, add enough vinegar to cover the vegetables.
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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Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Tomato + oniontop 8% of all pairsSmell alikemoderateCooked together20,633 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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Green tomatoes
- Provide the bulk of the vegetable base and release moisture that the salt draws out.
- Coarse sea salt
- Draws water out of the vegetables through osmosis, softening them and concentrating flavor during the standing period.
- Brown mustard seed
- Adds a sharp, pungent flavor that develops as the seeds sit in the mixture.
- Vinegar
- Acidifies the mixture, adding tang and helping preserve the vegetables once covered.
The step that matters
Adding the salt before the standing period. Salt must be mixed in thoroughly so it draws moisture out evenly over the three days; uneven salting leaves some vegetables soft or others too salty.
Swap the tomato
How well each one fits the dish's main ingredients (onion, pepper, mustard, vinegar):
- Horseradishfits better
- Broccolifits better
- Lettucefits better
- Tomatothe original
Fit is the average pairing score against onion, pepper, mustard, 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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