Why it works: Rice and tomato match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 3,065 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Brown Hash
Ingredients
Directions
Melt 3 tablespoons of butter in a saucepan.
Add chopped beef and brown the meat.
Add ¾ cup raw rice and cook until browned.
Combine browned rice with beef, 1 cup tomatoes, 1 teaspoon black pepper, chopped onion, and ¼ teaspoon salt.
Stew the mixture for 20 minutes.
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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Rice + tomatotop 6% of all pairsSmell alikestrongCooked together3,065 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Beef + oniontop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Beef + tomatotop 8% of all pairsSmell alikemoderateCooked together5,448 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Tomato + oniontop 8% of all pairsSmell alikemoderateCooked together20,633 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
- Beef
- Browns in the butter to build savory, meaty flavor that carries through the dish.
- Raw rice
- Absorbs liquid and cooks through as the mixture stews, providing the bulk of the dish.
- Tomatoes
- Add acidity and moisture that help the rice cook as the mixture stews.
- Butter
- Fat that carries heat for browning the beef and rice and adds richness.
The step that matters
Browning the beef and rice. Browning relies on the Maillard reaction, which needs direct contact with hot fat and enough space in the pan. Crowding or steaming the meat leaves it grey and bland, so flavor is lost before stewing.
Swap the onion
How well each one fits the dish's main ingredients (beef, butter, rice, tomato, pepper):
- Capsicumfits better
- Potatofits better
- Carrotfits about as well
- Onionthe original
Fit is the average pairing score against beef, butter, rice, tomato, pepper. 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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