Preheat oven to 425°F (220 degrees C)

Whisk flour, baking powdre, salt and baking soda together in a large bowl

Cut butter into flour mixture with a pastry blender until the mixture resembles coarse crumbs, about 5 minutes.

Make a well in the center of butter and flour mixture. Pour in 3/4 cup buttermilk; stir until just combined

Turn dough into a floured work surface pat together into a rectangle

Fold the rectangle in thirds. Turn dough a half turn, gather any crumbs and flatten back into a rectangle. Repeat twixe more, folding and pressing dough a total of three times.

Roll dough on a floured surface to about 1/2 inch thick

Cut out 12 biscuits using 2 1/2 -inch round biscuits cutter

Transfer biscuits to the prepared baking sheet. Press an indent into the top of each biscuit with your thumb.

Brush the tops of biscuits with 2 tablespoon of buttermilk

Bake in the preheated oven until browned, about 15 minutes.