Buttermilk Biscuits And Sausage Cream Gravy

Ingredients

• 2 cups all-purpose flour, plus more as needed
• 2 teaspoons baking powder
• 1 teaspoon fine salt
• 1/2 teaspoon baking soda
• 8 tablespoons cold unsalted butter (1 stick), cut into 1/2-inch pieces
• 1 cup cold buttermilk
• 3 tablespoons unsalted butter
• 12 ounces uncooked breakfast sausage, casings removed
• 1/3 cup all-purpose flour
• 1/2 teaspoon fine salt, plus more as needed
• 1/2 teaspoon freshly ground black pepper, plus more as needed
• 1/8 teaspoon cayenne pepper
• 3 1/2 cups whole milk