Name: Marengo Meat Balls with Rice
Ingredients: 3 slices bread; 1/3 cup milk; 1 1/2 pounds lean ground beef; 1 cup finely chopped onion; 1/2 teaspoon salt, divided; 1/4 teaspoon ground black pepper; 1 tablespoon vegetable oil; 2 cups beef broth; 1 cup canned peeled whole tomatoes, chopped; 1/2 cup mayonnaise or salad dressing; 1/4 cup flour; 1/8 teaspoon ground red pepper; 1 bay leaf; 3 cups hot cooked rice

Why it works: Tomato and rice match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 3,065 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓

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.

Tomato + ricetop 6% of all pairs

Smell alikestrong

Cooked together3,065 recipes

Shared aroma: trans-2-nonenal (cardboard, fatty).
Beef + oniontop 7% of all pairs

Smell alikemoderate

Cooked together17,092 recipes

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

Smell alikemoderate

Cooked together7,374 recipes

Shared aroma: 2-nonenal (fatty, green).
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).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Lean ground beef: Provides the main meat body and savory flavor of the meatballs.
Bread soaked in milk: Adds moisture to the meatballs so they stay tender rather than dense.
Mayonnaise: Adds fat and richness to the sauce, helping it turn smooth and creamy.
Flour: Thickens the sauce as it simmers, giving it body.
Beef broth: Forms the liquid base of the sauce and carries the flavor of the browned meatballs.
Canned peeled whole tomatoes: Adds acidity and tomato flavor to the sauce.

The step that matters

Cover and simmer for 30 minutes. Simmering gently with the lid on lets the meatballs cook through and the flour-thickened sauce become smooth without scorching or reducing too far. A hard boil can toughen the meatballs and break the sauce.

Swap the onion

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

Capsicumfits better
Potatofits better
Asparagusfits better
Onionthe original

Fit is the average pairing score against bread, milk, beef, pepper, tomato, flour, rice. 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.

Ingredient	Portion assumed	kcal
Flour	1 cup (125g) all-purpose	455
Beef	100g cooked	250
Rice	1 cup cooked (158g) white	206
Milk	1 cup (244ml) whole	149
Olive Oil	1 tbsp (14g)	119
Egg	1 large egg (50g)	78
Onion	1 medium (110g)	44
Tomato	1 medium (123g)	22
Chili	1 tsp (2.7g)	8
Black Pepper	1 tsp ground (2.3g)	6
Bay Leaf	1 leaf (0.6g)	2
Salt	1 tsp (6g)	0
Salad Dressing	not in our table	0

Marengo Meat Balls with Rice