Preheat oven to 450 degrees. In a large bowl mix flour, baking powder, baking soda and salt.

Cube the butter into small cubes. Work into flour mixture with two forks or a pastry cutter until it looks like coarse meal. Add the lemon juice or white vinegar to the cold milk then pour into mixture. Mix with a wooden spoon lightly. Turn onto a lightly floured surface and fold four or five times. This is a sticky dough. Pad to 1 inch thickness and cut with 2 1/2 inch biscuit cutter. Makes 8 to 10 biscuits. Put onto baking sheet. Bake for 10 to 12 minutes. Using the 1 Tbls of butter left, rub on top of hot biscuits. Set aside.

In a large skillet, over medium heat, fry sausage until browned. Remove sausage from pan with a slotted spoon, leaving fat in pan. Place on a dish covered with a paper towel to drain and set aside. In skillet melt butter and then add flour and whisk for a minute or so until the flour and butter are blended. Add milk slowly and continue whisking. Once blended, add salt, pepper and Italian seasoning. Bring to a simmer and lower heat. Once thickened, add sausage back in and heat through.

To serve, cut biscuit in half and place on plate. Spoon sausage gravy over.