Boil water for pasta. When boiling cook pasta according to directions. Continue to sauce while waiting for pasta

Melt butter and stir in flour. Medium heat.

Preheat Milk In microwave 2 to 3 min. Add to flour and stir. Simmer and stir until thickened

Add seasonings and vinegar and mustard.

Turn off heat. Add cheese and stir until consistent texture.

Stir sauce into macaroni and serve soft. Can be put into a pan and bakes at 350 for 25 min, or eaten soft.