Step 1: Preheat and Prepare
Heat the oven to 425°F (218°C). Set aside an oven-safe 10- or 12-inch skillet, such as cast iron, or alternatively, use a baking sheet. Preheating prepares the biscuits to rise effectively.
Step 2: Mix Dry Ingredients
Combine flour, baking powder, baking soda, sugar, and salt in a food processor bowl. Pulse 3-4 times just until combined, ensuring even distribution of leavening agents.
Step 3: Incorporate Butter
Cut the cold butter into cubes and add to the flour mixture. Pulse 5-7 times until the butter resembles tiny peas—look for small, consistent pieces throughout for optimal flakiness.
Step 4: Form the Dough
Transfer mixture to a large bowl. Make a well, pour in milk (or buttermilk), and stir until it forms a shaggy dough. This method ensures the liquids are evenly incorporated.
Step 5: Knead and Fold
On a lightly floured surface, bring the dough together by hand. Gently pat into a 3/4-inch thick rectangle, fold into thirds, rotate, and repeat twice more. Folding develops flaky layers without overworking.
Step 6: Cut Biscuits
Roll the dough to 1/2 to 3/4 inch thick. Cut with a 3-inch biscuit cutter without twisting to maintain layers. Place biscuits close in skillet or on sheet to help them rise.
Step 7: Bake to Perfection
Bake until golden brown, 10-15 minutes. An even color signifying they’re perfectly cooked. Serve warm for the best texture and flavor.