Name: Ukranian Borscht
Ingredients: 1 pound beef chuck, in one piece; 8 cups beef bouillon; salt and pepper; 1 bay leaf; 2 tbsp butter; 1 onion, chopped; 2 carrots, sliced; 3 medium raw beets, shredded; ½ medium cabbage, shredded; 1 tbsp minced parsley; 1 can tomato sauce (8 oz); 1 tbsp vinegar; 2 medium potatoes, cubed; sour cream

Why it works: Carrot and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 8,053 recipes. Both carry 2,4-decadienal, which smells seaweed. 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.

Carrot + parsleytop 1% of all pairs

Smell alikestrong

Cooked together8,053 recipes

Shared aroma: 2,4-decadienal (seaweed).
Pepper + parsleytop 2% of all pairs

Smell alikestrong

Cooked together34,122 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Pepper + cabbagetop 5% of all pairs

Smell alikemoderate

Cooked together4,081 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Pepper + carrottop 6% of all pairs

Smell alikestrong

Cooked together14,555 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Carrot + tomatotop 6% of all pairs

Smell alikestrong

Cooked together3,606 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

Beef chuck: Gives rich meaty flavor and becomes tender during long, slow simmering.
Beets: Provide the earthy sweetness and deep red color that define the soup.
Tomato sauce: Adds acidity and depth, and helps give the soup its color.
Vinegar: Adds acidity that brightens the flavor and balances the sweetness of the beets.
Cabbage: Adds body and a mild sweetness as it softens in the broth.
Potatoes: Add starch that thickens the soup slightly and makes it more filling.

The step that matters

Adding the vinegar and tomato sauce. Acid helps keep beets bright red; added too early in a long simmer, the color can fade and turn brownish. Cooking the vegetables briefly first lets their flavors develop before the soup is finished.

Swap the cabbage

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

Potatofits better
Capsicumfits better
Okrafits better
Cabbagethe original

Fit is the average pairing score against beef, pepper, butter, onion, carrot, parsley, tomato. 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
Beef	100g cooked	250
Potato	1 medium (173g) baked	161
Butter	1 tbsp (14g)	102
Yogurt	170g plain Greek	100
Broccoli	1 cup chopped (156g)	55
Onion	1 medium (110g)	44
Beet	1/2 cup (85g)	35
Carrot	1 medium (61g)	25
Tomato	1 medium (123g)	22
Black Pepper	1 tsp ground (2.3g)	6
Vinegar	1 tbsp (15ml) distilled	3
Bay Leaf	1 leaf (0.6g)	2
Parsley	1 tbsp chopped fresh (3.8g)	1
Salt	1 tsp (6g)	0

Ukranian Borscht