sausage gravy

in a skillet brown the sausage Tennessee pride is very lean so I had to add fat butter add flour mix butter sausage and flour add salt pepper mix very well add buttermilk stir in add milk 1 cup at a time stir till thickens add 2nd cup heat till thickens add 2/3milk stir till thickens simmer stirring constantly till done taste adjust seasoning taste