Name: Ham and Cheese Crepes
Yield: 6
Ingredients: 12 prepared crêpes; 1 ½ cups shredded cheddar cheese; 12 slices cooked, thinly sliced ham; 2 Tbsp finely- chopped green onion; ½ teaspoon salt; ⅛ teaspoon pepper; ½ cup sour cream; ½ teaspoon prepared mustard; ⅓ cup bread crumbs; 3 Tbsp melted butter

Why it works: Onion and mustard match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. 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.

Onion + mustardtop 6% of all pairs

Smell alikestrong

Cooked together9,259 recipes

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

Smell alikemoderate

Cooked together27,232 recipes

Shared aroma: delta-decalactone (sweet, creamy).
Ham + breadtop 7% of all pairs

Smell alikemoderate

Cooked together2,536 recipes

Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).
Cream + buttertop 8% of all pairs

Smell alikemoderate

Cooked together41,516 recipes

Shared aroma: delta-dodecalactone (sweet, creamy).
Cheddar cheese + buttertop 8% of all pairs

Smell alikemoderate

Cooked together2,436 recipes

Shared aroma: delta-dodecalactone (sweet, creamy).

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

What each ingredient does

Crêpes: Thin wrappers that hold the ham and filling together when rolled.
Shredded cheddar cheese: Melts into the filling, adding richness and a creamy, binding texture.
Sour cream: Adds moisture and tang, keeping the filling creamy rather than dry after baking.
Bread crumbs: Butter-coated crumbs crisp and brown on top for a contrasting texture.
Melted butter: Fat that helps the bread crumbs toast and brown evenly.

The step that matters

Cover the pan loosely with foil. Foil traps steam and gently heats the filling so the cheese melts through before the crumb topping over-browns. Leaving it loose keeps some moisture from building up and softening the crumbs.

Swap the mustard

How well each one fits the dish's main ingredients (cheddar cheese, ham, onion, pepper, cream, bread, butter):

Potatofits better
Capsicumfits about as well
Mustardthe original
Chivefits about as well

Fit is the average pairing score against cheddar cheese, ham, onion, pepper, cream, bread, butter. 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
Ham	100g cooked	145
Cheddar Cheese	1 oz (28g)	113
Butter	1 tbsp (14g)	102
Yogurt	170g plain Greek	100
Green Onion	1 medium (110g)	44
Black Pepper	1 tsp ground (2.3g)	6
Mustard	1 tsp (5g) yellow	3
Salt	1 tsp (6g)	0

Ham and Cheese Crepes