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 ↓
Pot Roast
Ingredients
Directions
In a large pot, heat the lard and brown the chopped onion.
Stir in the flour and mix well.
Add the rump roast and brown it on both sides.
Pour in the canned tomatoes and boiling water.
Season with salt and cayenne pepper to taste.
Cover and boil briskly for about 3 hours, watching closely to prevent burning.
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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Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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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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Onion + flourtop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + peppertop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Rump roast
- Provides the main body of meat, which becomes tender through long, moist cooking.
- Flour
- Stirred into the browned onion and fat, it thickens the cooking liquid into a gravy.
- Canned tomatoes
- Supply liquid and acidity that help build the braising sauce.
- Lard
- Fat that carries the browning of the onion and roast, adding savoury flavour.
The step that matters
Cover and boil briskly for about 3 hours. Boiling too hard or uncovered can reduce the liquid and scorch the bottom of the pot before the meat softens. Keeping the lid on and watching the pot closely helps the collagen in the roast break down into tender meat without burning.
Swap the onion
How well each one fits the dish's main ingredients (flour, tomato, pepper):
- Capsicumfits better
- Okrafits better
- Eggplantfits better
- Onionthe original
Fit is the average pairing score against flour, tomato, 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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