Why it works: Beef and onion are a kitchen classic. They rank in the top 3% of all ingredient pairs, and 17,091 recipes mention both. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
The recipe
6 servingsIngredients
Contains: milk (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Method written by CompKitchen from the ingredient list. Not the original author's method, not kitchen-tested.
Combine the pearl barley and 3 cups water in a saucepan. Bring to a boil, reduce heat to low, cover and simmer about 30 minutes until tender and the water is absorbed.
While the barley cooks, heat the olive oil in a large skillet over medium-high heat. Add the ground beef and cook, breaking it up, about 6 minutes until browned and it reaches 160°F (71°C). Drain excess fat.
Add the chopped onion and red bell pepper to the skillet and cook about 5 minutes until softened. Stir in the garlic, dried oregano, dried basil, salt and black pepper, and cook 1 minute.
Stir in the chopped tomatoes, chopped zucchini and rinsed and drained kidney beans. Simmer uncovered about 10 minutes, until the zucchini is tender.
Stir the cooked barley into the skillet and heat through, about 3 minutes.
Sprinkle the shredded reduced-fat Cheddar over the top, cover and cook about 2 minutes until melted. Serve hot.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.
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Beef + oniontop 3% of all pairsAroma overlapmoderateMentioned together17,091 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Oregano + basiltop 1% of all pairsAroma overlapstrongMentioned together1,390 recipes
Shared aroma: estragole (anise, licorice).
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Onion + garlictop 1% of all pairsAroma overlapstrongMentioned together29,030 recipes
Shared aroma: furaneol (caramel, strawberry).
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Pepper + basiltop 3% of all pairsAroma overlapstrongMentioned together5,292 recipes
Shared aroma: methyl cinnamate (strawberry).
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Olive + garlictop 3% of all pairsAroma overlapmoderateMentioned together23,449 recipes
Shared aroma: linalool (floral, citrus).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (barley, olive, beef, garlic, pepper, oregano, basil):
- Tomatobetter flavor fit
- Capsicumbetter flavor fit
- Carrotbetter flavor fit
- Onionthe original
Fit is the average pairing score against barley, olive, beef, garlic, pepper, oregano, basil. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
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