Runner Resturent

INGREDIENTS
1/2 tablespoon olive oil
1 yellow onion, finely chopped
1 teaspoon minced garlic
1 cup + 2 tablespoons 2% or whole milk, separated
2 cups water
2 and 1/4 cups chicken broth (low-sodium)
1 package (16 ounces) small pasta shells
1 tablespoon Dijon mustard
1 large lemon
2 cans (5 ounces EACH) Genova Albacore Tuna in Olive Oil, drained
1 cup frozen peas
Salt and pepper
Optional: freshly shredded sharp cheddar cheese, fresh parsley, fresh lemon wedges