Why it works: Onion and beef 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 ↓
Savory Onions
Ingredients
Directions
Cook the onions
Select young onions and place them in a saucepan with ¼ cup salted water.
Simmer the onions for ten minutes, then drain the water.
Pour 1 cup beef stock over the onions and cook for an additional ten minutes.
Remove the onions to a hot dish using a split spoon.
Make the gravy
In the same pan, thicken the remaining gravy with 1 heaping teaspoon browned flour mixed with 1 heaping teaspoon butter.
Stir until you have a smooth brown sauce, then season with 1 teaspoon kitchen bouquet, 1 teaspoon tomato ketchup, and salt and pepper to taste.
Pour the sauce over the onions.
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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Onion + beeftop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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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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Beef + tomatotop 8% of all pairsSmell alikemoderateCooked together5,448 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Beef + peppertop 10% of all pairsSmell alikemoderateCooked together18,971 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
- Young onions
- Provide the main vegetable body and sweet flavour that the gravy accompanies.
- Browned flour
- Thickens the gravy so it coats the onions smoothly.
- Butter
- Adds richness and fat that carries flavour and gives the sauce a smooth finish.
- Beef stock
- Forms the liquid base of the gravy and adds savoury meaty flavour.
- Kitchen bouquet
- Deepens the brown colour of the sauce and adds savoury depth.
- Tomato ketchup
- Adds a touch of acidity and sweetness to balance the savoury gravy.
The step that matters
Thickening the gravy with browned flour and butter. Flour must be fully mixed into the fat and liquid and stirred until smooth, because lumps form when flour clumps in hot liquid. Stirring keeps starch granules dispersed so the sauce thickens evenly.
Swap the tomato
How well each one fits the dish's main ingredients (onion, beef, flour, butter, ketchup, pepper):
- Chivefits better
- Leekfits better
- Capsicumfits better
- Tomatothe original
Fit is the average pairing score against onion, beef, flour, butter, ketchup, 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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