Easy Biscuits and Gravy

Bahan-bahan (4 porsi)

• 1½ cups all purpose flour
• 2 teaspoons baking powder
• ¼ teaspoon baking soda
• ¼ teaspoon fine sea salt
• ¼ cup (½ stick) unsalted butter, (cold, cut into small cubes)
• 2 tablespoons shortening
• ½ cup buttermilk, (cold)
• ½ pound (8 ounces) bulk breakfast sausage
• 2 tablespoons all purpose flour
• 1 cup milk, (room temperature)
• salt and pepper, (to taste)