Why it works: Tomato and pepper are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 17,923 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Spanish Beef
Ingredients
Directions
Make the sauce
Melt and brown the butter in a pan.
Add the sliced onion and cook until delicately browned.
Stir in the flour and brown it while stirring continuously.
Finish and serve
Add the chopped meat, stock, and tomatoes.
Cook until thoroughly heated, then season and serve.
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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Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Tomato + oniontop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Browns in the pan and adds richness and a nutty flavour to the base.
- Flour
- Browned in the butter, it thickens the stock and tomatoes into a sauce.
- Onion
- Softens and browns, adding sweetness and savoury depth to the sauce.
- Tomatoes
- Add acidity, moisture and body to the sauce.
- Cooked meat
- Provides the main protein, heated through in the sauce.
The step that matters
Stirring the flour as it browns. Flour can scorch on the bottom of the pan before it turns golden. Constant stirring spreads the heat evenly, so the flour browns for flavour without burning and turning bitter.
Swap the tomato
How well each one fits the dish's main ingredients (meat, butter, flour, pepper, onion):
- Potatofits better
- Shallotfits better
- Leekfits better
- Tomatothe original
Fit is the average pairing score against meat, butter, flour, pepper, onion. 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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