Why it works: Beef and onion are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 17,092 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Beef, Hashed
Ingredients
Directions
Prepare
Melt the butter or dripping in a pan.
Add the diced bacon and sliced onion, frying until light brown.
Simmer and serve
Lay the slices of beef in the pan and pour the sauces over them.
Cook slowly for about 30 minutes without boiling.
Serve garnished with fried bread or toast.
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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Beef + oniontop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Beef + tomatotop 8% of all pairsSmell alikemoderateCooked together5,448 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + saucetop 15% of all pairsSmell alikelowCooked together15,338 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
Butter and sauce barely smell alike, yet cooks put them together in 15,338 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
- Cold roast beef
- Forms the main body of the hash, providing the meat that is warmed through in the sauce.
- Onion
- Softens and turns sweet as it fries, adding flavour to the base of the dish.
- Streaky bacon
- Renders fat and adds savoury, smoky flavour while the onion browns.
- Spanish sauce
- Supplies the rich, thickened liquid that coats the beef and gives the hash its body.
- Tomato sauce
- Adds acidity and a bright tomato flavour that balances the rich meat and sauce.
The step that matters
Cook slowly without boiling. Gentle heat keeps the beef tender and stops the sauces from reducing, scorching or toughening the meat, which happens when the mixture boils hard.
Swap the tomato
How well each one fits the dish's main ingredients (beef, onion, butter, sauce):
- Potatofits better
- Chivefits about as well
- Tomatothe original
- Leekfits about as well
Fit is the average pairing score against beef, onion, butter, sauce. 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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