Cook pasta in boiling water according to package directions, drain and return to pot.
In a large saucepan, whisk together milk, flour, salt until well blended. Bring to boil over med high heat, whisking frequently, reduce heat to low and simmer, stirring often, until thickened about 2 minutes. Remove pan from heat and whisk in cheese and hot sauce. Add sauce to pasta, toss to mix and coat pasta. Yields about 1 cup per serving.