Preheat the oven to 400°F and line a large baking sheet with parchment paper and set aside.
Add the flour, baking powder, baking soda, and salt to a food processor and pulse together.
2 cups all-purpose flour, 1 tablespoon baking powder, ¼ teaspoon baking soda, ½ teaspoon salt
Then add the well-chilled butter and pulse until the mixture is crumbly.
7 tablespoons salted butter
Add in the buttermilk and pulse until just mixed.
¾ cups buttermilk
Sprinkle flour on a clean surface and rolling pin. Place the dough onto the counter and gently roll the dough out into a rectangle shape.
Fold a third of the dough onto itself, and then fold the opposite third of the dough onto it.
Now press the dough into a rectangle about ½-inch thick. Use a 2½-inch round cookie cutter to cut out as many biscuits as you can. Place these on the baking sheet.
Gather up the scraps of dough and again press it out to ½-inch thick. Continue doing this until all the dough is used up.
Brush the tops of the biscuits with a little buttermilk then bake for about 12 to 15 minutes or until golden.
While the biscuits are baking, prepare the sausage gravy.
Begin by breaking up the sausage in a large skillet over medium-high heat. Stirring frequently, until the sausage is fully cooked.
1 pound pork sausage
Add the butter and stir until melted.
1 tablespoon salted butter
Sprinkle on the flour and stir until it coats all of the meat. Cook for 2 minutes.
¼ cup all-purpose flour
Gradually add in the milk and apple cider vinegar and stir the mixture until smooth.
2½ cups whole milk, 2 teaspoons apple cider vinegar
Stir in the pepper, seasoned salt, and garlic powder.
1 teaspoon seasoning salt, ½ teaspoon ground black pepper, ½ teaspoon garlic powder
Allow this to simmer for at least 5 minutes. Adjust seasoning to taste.
Spoon gravy over warm biscuits.