Before you begin making the biscuits, cut your butter up into cubes and place in the freezer for 15-30 minutes. This will help ensure that the butter stays super cold while making the biscuits and the biscuits come out light and flaky!
Preheat oven to 425 degrees.
In a mixing bowl, combine flour, baking powder, sugar, and salt.
Add cold butter and cut into mixture with a pastry cutter. Work quickly until the mixture is coarse and crumbly.
Pour in cold milk and use a spatula to combine the mixture.
Once the mixture starts to come together, place on a floured surface and use hands to work the dough and form into a disk. You may have to add a little flour here if the dough is too sticky.
Gently fold the dough over itself 4-5 times, turning a bit each time. This creates "lamentation" and helps foster a flaky dough.
Press dough flat with your hands until it's about 1 inch thick. Use a biscuit cutter (or the mouth of a glass) to cut biscuits. A 2-inch diameter cutter will yield about 10 biscuits.
Place on a baking tray and bake for 10-12 minutes, until the tops are golden brown.