Name: Chicken Barley Soup
Ingredients: 3 lbs chicken, cut in pieces; 1/2 cup uncooked barley; 9 cup water; 2 tbsp lemon juice; 3 celery stalks with leaves; 1 small onion; 1/2 cup chopped onion; 1/2 cup finely chopped carrot; 1/2 cup chopped fresh parsley; 1 tbsp salt; 1/2 tsp pepper, freshly ground; 1/4 tsp celery seed; 1 1/2 cup green beans cut, fresh

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).
Lemon + parsleytop 1% of all pairs

Smell alikestrong

Cooked together14,037 recipes

Shared aroma: beta-phellandrene (minty, terpene).
Celery + carrottop 1% of all pairs

Smell alikestrong

Cooked together10,173 recipes

Shared aroma: myristicin (spice, warm).
Celery + parsleytop 1% of all pairs

Smell alikestrong

Cooked together6,810 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Parsley + peppertop 2% of all pairs

Smell alikestrong

Cooked together34,122 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).

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

What each ingredient does

Chicken: Provides the main protein and, as it simmers, flavors the broth.
Barley: Adds chewy body and thickens the soup as its starch releases during simmering.
Lemon juice: Adds acidity that brightens the flavor of the broth.
Green beans: Add tender-crisp texture and color near the end of cooking.
Carrot: Adds sweetness and color to the broth as it softens.

The step that matters

Chilling the broth to remove fat. Chilling lets fat rise and solidify on the surface so it can be lifted off cleanly, leaving a lighter broth. Skipping this step leaves greasy soup.

Swap the onion

How well each one fits the dish's main ingredients (chicken, barley, lemon, celery, carrot, parsley, pepper):

Leekfits better
Parsnipfits better
Turnipfits better
Onionthe original

Fit is the average pairing score against chicken, barley, lemon, celery, carrot, parsley, 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.

Ingredient	Portion assumed	kcal
Barley	1 cup cooked (157g)	193
Chicken	100g cooked	165
Onion	1 medium (110g)	44
Bell Pepper	1 medium (119g)	31
Carrot	1 medium (61g)	25
Lemon	juice of 1 lemon (48ml)	12
Celery Stalks	1 stalk (40g)	6
Black Pepper	1 tsp ground (2.3g)	6
Celery Seed	1 stalk (40g)	6
Parsley	1 tbsp chopped fresh (3.8g)	1
Salt	1 tsp (6g)	0
Water	not in our table	0

Chicken Barley Soup