Why it works: Onion and tomato 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 ↓
Chili Con Carne
Ingredients
Directions
Prepare the meat
Grind the round steak in a meat chopper and fry it brown in the suet fat.
Make the stew
In a stew pan, combine the strained tomatoes, browned meat, chopped onions, salt, paprika, and vinegar. Stir well.
Cook on low heat for 30 to 60 minutes.
Add the water and cooked beans, then simmer on low heat for an additional hour.
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 + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Tomato + kidney beanstop 12% of all pairsSmell alikemoderateCooked together821 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + vinegartop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
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Onion + kidney beanstop 15% of all pairsSmell alikemoderateCooked together1,050 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Vinegar + tomatotop 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
- Round steak
- Provides the main meaty body and substance of the chili.
- Suet fat
- Carries heat for browning the meat and adds richness and flavour.
- Onions
- Add sweetness and aromatic depth as they soften during cooking.
- Tomatoes
- Supply acidity and liquid that build the body of the sauce.
- Brown or kidney beans
- Add starchy body and texture, thickening the stew as they simmer.
The step that matters
Browning the meat in the suet fat. Frying the meat until well browned triggers the Maillard reaction, which builds deep, savoury flavour. Meat added pale and steamed in the pot tastes flat and grey.
Swap the kidney beans
How well each one fits the dish's main ingredients (onion, vinegar, tomato):
- Beansfits better
- Sesamefits better
- Black-eyed peafits better
- Kidney beansthe original
Fit is the average pairing score against onion, vinegar, tomato. 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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