Why it works: Tomato and onion are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 20,633 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Green Tomato Pickle
Ingredients
Directions
Prepare the tomatoes
Slice and soak the tomatoes in salt and water overnight.
In the morning, drain the tomatoes and scald them in half vinegar and half water until tender.
If desired, add the small onions while scalding.
Spice and seal
Meanwhile, scald 3 cups of sugar and 1 quart of vinegar with spices in a bag.
Once the tomatoes are tender, pour off the vinegar and water, then add the hot, spiced vinegar.
Seal the mixture in 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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Tomato + oniontop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Vinegar + oniontop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
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Vinegar + sugartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
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Tomato + vinegartop 16% of all pairsSmell alikemoderateCooked together5,063 recipes
Shared aroma: beta-damascenone (apple, rose).
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Tomato + sugartop 33% of all pairsSmell alikelowCooked together4,667 recipes
Shared aroma: beta-damascenone (apple, rose).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Green tomatoes
- Provide the main body of the pickle, becoming tender when scalded in vinegar.
- Vinegar
- Supplies the sharp acidity that preserves and flavours the pickle.
- Sugar
- Balances the sharpness of the vinegar with sweetness.
- Coarse sea salt
- Draws moisture out of the sliced tomatoes during the overnight soak, firming their texture.
The step that matters
Pouring off the vinegar and water before adding the spiced vinegar. Tomatoes must be fully tender before this step, because the spiced vinegar is added to them once. If they are not yet soft, the pickle will stay firm and the flavour will not fully penetrate the fruit.
Swap the onion
The recipe marks onion as optional. How well each one fits the dish's main ingredients (tomato, vinegar, sugar):
- Capsicumfits better
- Cucumberfits better
- Mustardfits better
- Onionthe original
Fit is the average pairing score against tomato, vinegar, 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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