Combine flour, baking powder, sugar, salt in a bowl. Whisk.
Grate in frozen butter. Mix.
Add milk. Mix until well incorporated.
Flour a flat surface. Dump dough out and flatten or roll out until 1 inch thick.
Cut out biscuits and add to a parchment lined baking sheet.
Bake for 14-17 minutes at 425.
Flash freeze unbaked biscuits for 1 hour on a cookie sheet. Add to an airtight container and place back in the freezer.
Bake from frozen at 425 for 16-20 minutes.
