Why it works: Onion and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Cold Roast, Warmed
Ingredients
Directions
Prepare
Slice the lean meat from the cold roast into small, thin pieces.
In a frying pan, heat the butter or drippings over medium heat.
Chop the onion and fry it until brown, then remove it from the pan.
Make the gravy and heat the meat
Add the meat gravy to the pan; if it's not thick enough, stir in a little flour.
Season with salt and pepper, then add the sliced meat.
Let the meat simmer for a few minutes until heated through.
Serve hot.
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 + peppertop 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).
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Meat + buttertop 16% of all pairsSmell alikemoderateCooked together7,594 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Meat + oniontop 17% of all pairsSmell alikelowCooked together6,364 recipes
Shared aroma: 2,4-decadienal (seaweed).
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
- Lean meat from cold roast
- Forms the main body of the dish and is reheated gently in the gravy.
- Butter or drippings
- Fat for frying the onion and carrying flavor into the gravy.
- Onion
- Browning in the fat develops sweetness and savory aroma for the gravy.
- Meat gravy
- Adds moisture and meaty flavor that keeps the sliced meat from drying out.
- Flour
- Starch thickens the gravy if it is too thin.
The step that matters
Simmer the meat gently. Lean cooked meat dries out and toughens when it is boiled or reheated too hard. A gentle simmer in the gravy only warms it through and keeps the slices tender.
Swap the onion
How well each one fits the dish's main ingredients (meat, butter, flour, pepper):
- Shallotfits better
- Potatofits better
- Capsicumfits better
- Onionthe original
Fit is the average pairing score against meat, butter, flour, 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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