Southern Biscuits and Gravy

Ingredients:

For the Biscuits:

* 2 cups all-purpose flour

* 1 tablespoon baking powder

* 1/2 teaspoon baking soda

* 1 teaspoon salt

* 1/2 cup cold unsalted butter, cubed

* 3/4 cup buttermilk

For the Sausage Gravy:

* 1 pound breakfast sausage

* 1/4 cup all-purpose flour

* 2 1/2 cups whole milk

* 1 teaspoon salt

* 1 teaspoon black pepper

* 1/4 teaspoon cayenne pepper (optional)