Name: Leek Gratin
Ingredients: 8 young leeks, white and pale green portions; 1 cup ricotta cheese; 1 cup shredded Gruyère cheese; 1 Tbs. whole-grain mustard; Sea salt and freshly ground pepper, to taste; 1 cup panko; 1/2 tsp. chopped fresh flat-leaf parsley; 1/2 tsp. chopped fresh thyme

Why it works: Parsley and thyme match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 9,057 recipes. Both carry cuminaldehyde, which smells Spicy, cumin. The science ↓

Leek Gratin

Ingredients

8 young leeks, white and pale green portions
1 cup ricotta cheese
1 cup shredded Gruyère cheese
1 Tbs. whole-grain mustard
Sea salt and freshly ground pepper, to taste
1 cup panko
1/2 tsp. chopped fresh flat-leaf parsley
1/2 tsp. chopped fresh thyme

Directions

Step-by-step directions aren't available for this recipe. See the full recipe at the source →

Nutrition, whole recipe (rough)

800Calories

33 gProtein

21 gFat

114 gCarbs

What these numbers assume: 9 portions

Ingredient	Portion assumed	kcal
Flour	1 cup (125g) all-purpose	455
Ricotta Cheese	1/2 cup (124g) part-skim	174
Cheese	1 oz (28g) cheddar	113
Onion	1 medium (110g)	44
Black Pepper	1 tsp ground (2.3g)	6
Thyme	1 tsp dried (1.4g)	4
Mustard	1 tsp (5g) yellow	3
Parsley	1 tbsp chopped fresh (3.8g)	1
Salt	1 tsp (6g)	0

One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.

By williamssonoma. Recipe from Open Recipes.

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.

Parsley + thymetop 1% of all pairs

Smell alikestrong

Cooked together9,057 recipes

Shared aroma: cuminaldehyde (Spicy, cumin).
Leek + thymetop 1% of all pairs

Smell alikestrong

Cooked together360 recipes

Shared aroma: 1-octen-3-ol (mushroom, earthy).
Pepper + parsleytop 2% of all pairs

Smell alikestrong

Cooked together34,122 recipes

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

Smell alikemoderate

Cooked together11,585 recipes

Shared aroma: beta-phellandrene (minty, terpene).
Mustard + thymetop 4% of all pairs

Smell alikestrong

Cooked together913 recipes

Shared aroma: eucalyptol (eucalyptus, herbal).

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

Swap the leek

How well each one fits the dish's main ingredients (ricotta cheese, cheese, mustard, pepper, parsley, thyme):

Spinachfits better
Shallotfits better
Chivefits better
Leekthe original

Fit is the average pairing score against ricotta cheese, cheese, mustard, pepper, parsley, thyme. Candidates are from the same food group and used in at least 100 recipes.

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