Double Batch (~10 medium sized or ~16 small biscuits) – 500 g all purpose flour preferably a low protein content flour – 4 teaspoons baking powder – ½ tsp baking soda – 50 g or ¼ cup granulated sugar – 1 tsp fine sea salt – 226 or 2 sticks unsalted butter slightly softened (at cool room temperature) – 100 g sourdough discard unfed starter, no more than 6 days old – 300 g buttermilk Small batch (~5 medium sized biscuits) – 250 g all purpose flour – 2 teaspoons baking powder – ¼ tsp baking soda – 2 tablespoons granulated sugar – ½ tsp fine sea salt – 113 g unsalted butter – 50 g sourdough discard – 150 g buttermilk