In a non-stick saucepan, melt butter over low heat. Add flour and salt and mix until a nice paste.
Slowly add 1 cup of milk and spices, stirring constantly.
Turn to medium high and stir until boiling and thick. Taste and season until flavorful!
Add more flavor by seasoning with Parmesan cheese, a teaspoon of lemon juice, or a few tablespoons of chopped chives or parsley.