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 ↓
Sweet Tomato Pickles
Ingredients
Directions
Salt the vegetables
Layer the sliced tomatoes and onions in a bowl, sprinkling salt over them. Let them sit overnight.
Cook the pickles
In the morning, combine water and vinegar in a pot and bring to a boil. Boil for 20 minutes.
Drain the vegetables before proceeding.
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.
-
Tomato + oniontop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + vinegartop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Tomato + vinegartop 16% of all pairsSmell alikemoderateCooked together5,063 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 bulk and body of the pickle, softening into a tender texture as they cook.
- Onions
- Add aroma and a mild sweetness that deepens as they cook.
- Vinegar
- Adds acidity and the sharp tang that defines the pickle.
The step that matters
Drain the vegetables before proceeding. The overnight salting draws a lot of liquid and salt out of the vegetables. Draining off that excess keeps the pickle from becoming too salty and watery.
Swap the tomato
How well each one fits the dish's main ingredients (onion, vinegar):
- Mustardfits better
- Cucumberfits better
- Radishfits better
- Tomatothe original
Fit is the average pairing score against onion, 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Tomato Soup526 recipes
Cream of Tomato Soup107 recipes
Tomato Bisque61 recipes
Cream Tomato Soup28 recipes