Name: Pot Roast
Ingredients: 5 pounds round beef; 4 cups cold water; 2 large onions; 12 whole cloves (6 in each onion); coarse sea salt to taste; black pepper to taste; 1 large bay leaf, crushed; 1 cup tomatoes; 4 thin slices of bread

Why it works: Clove and pepper match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 17,451 recipes. Both carry ethyl octanoate, which smells fruity, wine. The science ↓

Pot Roast

Oven, in the book's wordsA quick oven

Ingredients

Directions

The book says “a quick oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.

Braise

Brown the roast in a kettle.
Add cold water, onions, cloves, salt, pepper, bay leaf, and tomatoes.

Cook and serve

Set the kettle in the oven and cook slowly at 300°F (150°C) for 3 hours.
One hour before it's done, add the slices of bread.
Strain the gravy before serving.

Recipe from a historical cookbook (Internet Archive).

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.

Clove + peppertop 5% of all pairs

Smell alikestrong

Cooked together17,451 recipes

Shared aroma: ethyl octanoate (fruity, wine).
Beef + oniontop 7% of all pairs

Smell alikemoderate

Cooked together17,092 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Pepper + tomatotop 7% of all pairs

Smell alikemoderate

Cooked together17,923 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Beef + tomatotop 8% of all pairs

Smell alikemoderate

Cooked together5,448 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Onion + tomatotop 8% of all pairs

Smell alikemoderate

Cooked together20,633 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

Round beef: Forms the main meat that becomes tender through long, slow braising.
Onions: Add sweetness and aromatic flavour to the cooking liquid as they soften.
Tomatoes: Add acidity and body to the braising liquid, rounding out the gravy.
Bread: Thickens the gravy as it breaks down in the cooking liquid.

The step that matters

Cook slowly at 300°F (150°C) for 3 hours. Low, steady heat lets the connective tissue in the tough round cut break down into gelatin, making the meat tender. Cooking too hot can toughen the muscle fibres and dry the roast before the collagen softens.

Swap the clove

How well each one fits the dish's main ingredients (beef, onion, pepper, tomato, bread):

Garlicfits better
Celeryfits better
Thymefits better
Clovethe original

Fit is the average pairing score against beef, onion, pepper, tomato, bread. 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.