1. Preheat oven to 475F degrees. In a medium bowl, whisk together the flour, baking powder, sugar, salt, and cream of tartar.
2. Use a cheese grater to grate the butter into the bowl. Stir butter into flour mixture. Stir until the butter is broken up and the mixture is well combined.
3. Add the milk and stir until just combined, do not over-mix. Pat dough on a floured surface until it’s 3/4 inch thick. Cut into biscuits using a cooking cutter.
4. Place on an ungreased cookie sheet. Bake for 8 to 10 minutes until golden brown.

For the sausage gravy

1. In a large cast iron skillet or sauce pan add the sausage and cook over medium to medium-high heat until the sausage is cooked approx. 8-10 minutes. break up the meat into small chunks. Do not drain the grease that the sausage made while cooking.
2. Sprinkle the flour over the top of the sausage and then stir well to combine. Let the flour and sausage cook for 1-2 minutes, stir often.
3. Whisk the milk slowly into the sausage and flour mixture. Continue whisking until the gravy starts to simmer, about 5 minutes.
4. Keep stirring and let the gravy cook while at a low simmer for an additional 1-3 minutes, until it thickens.
5. Serve the hot gravy over the biscuits and enjoy!