Prepare your chosen ingredients.

Season protein (e.g., salmon) and vegetables with salt and pepper.

Adjust cooking time based on the selected ingredients.

In a pan, combine milk, water, pasta, and soup stock.

Bring the mixture to a boil, then reduce heat to medium.

Cook pasta for 2 minutes longer than the package instructions.

Maintain a consistent simmer, adjusting heat as needed.

Reduce the sauce to your preferred thickness.

Remove from heat, stir in butter and prepared ingredients.

Add cheese and salt for flavoring.

Top with fresh black pepper.

Customize with ingredients like tuna, mentaiko, or basil.