Cook pasta not quite all the way through (will finish cooking in the sauce).
Melt butter in a medium pot or large saucepan over medium heat. Add flour and cook for 1 minute.
Add about 3/4 cup of milk and mix into butter mixture.
Add remaining milk and mix. Then add water and Seasonings.
Add macaroni and mix. Stir occasionally as it comes to heat. When you see wisps of steam as you stir, lower the heat down to medium low.
Stir regularly until the sauce thickens. Take it off the stove and stir the cheese in quickly. Adjust salt and pepper to taste. <- and="" considerably.="" in="" reduces="" sauce="" span="" step="" the="" thickens="" this="">->