Preheat Oven: Preheat your oven to 475°F (245°C). Line a baking sheet with parchment paper or a silicone baking mat.
Mix Dry Ingredients: In a large bowl, whisk together the flour, baking powder, salt, and sugar.
Cut in Butter: Add the cold butter to the dry ingredients and use a pastry cutter or two forks to cut the butter into the flour until the mixture resembles coarse crumbs.
Add Buttermilk: Pour in the cold buttermilk and stir gently until the dough just comes together. Be careful not to overmix.
Knead the Dough: Turn the dough out onto a lightly floured surface. Fold the dough over onto itself 3-4 times to create layers.
Cut the Biscuits: Using a biscuit cutter or a drinking glass, cut out biscuits from the dough. Press straight down without twisting to ensure the biscuits rise properly.
Bake the Biscuits: Place the biscuits on the prepared baking sheet and bake for 10-12 minutes, or until they are golden brown on top.
Serve: Remove the biscuits from the oven and allow them to cool slightly before serving.