Name: Skillet Tuna Mac Casserole
Prep time: 15 min
Cook time: 30 min
Yield: 6
Ingredients: 4 Tablespoons Lightly Salted Butter; ¼ cups Finely Diced Or Grated White Onion; ¼ cups Diced Red Bell Pepper; 1 cup White Button Mushrooms (wipe With Damp Paper Towels, Sliced Thinly); ½ teaspoons Black Pepper; ¼ teaspoons Chopped Fresh Parsley; 3 Tablespoons All-purpose Flour; 2 cups Whole Milk; 2 cups Small Shells Pasta, Cooked According To Package Instructions And Drained; ¼ cups White Cheddar Cheese, Shredded; ¼ cups Fontina Cheese, Shredded; 2 cans (5 Oz. Size) Tuna, Drained (Your Choice, Light, Albacore); ¾ cups Seasoned Bread Crumbs

Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and 34,122 recipes mention both. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.

Pepper + parsleytop 2% of all pairs

Aroma overlapstrong

Mentioned together34,122 recipes

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

Aroma overlapstrong

Mentioned together732 recipes

Shared aroma: coumarin (sweet, hay).
Flour + pastatop 5% of all pairs

Aroma overlapstrong

Mentioned together659 recipes

Shared aroma: isobutyraldehyde (malty, green).
Butter + milktop 7% of all pairs

Aroma overlapmoderate

Mentioned together81,283 recipes

Shared aroma: (z)-4-heptenal (biscuit, cream).
Butter + mushroomtop 7% of all pairs

Aroma overlapmoderate

Mentioned together12,525 recipes

Shared aroma: trans-2-decenal (waxy, orange).

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

Flavor stand-ins for the onion

How well each one fits the dish's main ingredients (butter, pepper, mushroom, parsley, flour, milk, pasta):

Shallotbetter flavor fit
Spinachbetter flavor fit
Chivebetter flavor fit
Onionthe original

Fit is the average pairing score against butter, pepper, mushroom, parsley, flour, milk, pasta. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).

Skillet Tuna Mac Casserole