2 cups all-purpose flour (250g)
1 Tablespoon baking powder
1 Tablespoon granulated sugar
1 teaspoon salt
6 Tablespoons unsalted butter (Frozen)
3/4 cup Buttermilk
Preheat oven to 425 degrees F. Line a baking sheet with parchment paper.
Combine the dry ingredients.
With a box grater, grate the frozen stick of butter into the flour mixture. Stir into mixture. Add the buttermilk and stir just until combined.
Dump the mixture onto a floured board. Lightly flour top of dough and shape into a rectangle. Gentle fold into thirds like a letter. Rotate the dough 90 degrees and fold again. Repeat several times.
Gently flatten dough to 1" thick. Using a 2 3/4" biscuit cutter, cut out about 3 biscuits. Pull dough back together and cut the remainder into biscuits. You will get about 6 biscuits.
Place biscuits on baking sheet and bake for 12-15 minutes. Remove from oven and brush the tops with melted butter.