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 ↓
Chile Con Carne
Ingredients
Directions
The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
In a large pot, brown the hamburger steak over medium heat.
Add the bag of onions and mixed spices, cooking until the onions are soft.
Stir in the kidney beans, ketchup, and tomatoes.
Simmer for 30 minutes, stirring occasionally.
Gradually add the brown flour to thicken the mixture, stirring well.
Cook for an additional 10 minutes before serving.
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.
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Kidney beans + tomatotop 12% of all pairsSmell alikemoderateCooked together821 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Ketchup + flourtop 13% of all pairsSmell alikemoderateCooked together2,435 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Onion + kidney beanstop 15% of all pairsSmell alikemoderateCooked together1,050 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + flourtop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Hamburger steak
- Provides the meat base and savory browned flavor when seared in the pot.
- Onions
- Soften during cooking and add sweetness and body to the chile.
- Kidney beans
- Add texture and bulk, holding their shape through the simmer.
- Tomatoes
- Provide acidity and liquid that forms the base of the sauce.
- Ketchup
- Adds sweetness, tang and thickness to the sauce.
- Brown flour
- Thickens the simmering liquid as it is stirred in.
The step that matters
Adding the brown flour. Flour added to hot liquid can clump into lumps. Adding it gradually while stirring well lets the starch disperse evenly and thicken the sauce smoothly.
Swap the kidney beans
How well each one fits the dish's main ingredients (onion, ketchup, tomato, flour):
- Beansfits better
- Chickpeafits better
- Chestnutfits better
- Kidney beansthe original
Fit is the average pairing score against onion, ketchup, tomato, flour. 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
Beef Kidney in Gravy53 recipes