Preheat oven to 375 F degrees.
Melt a 2 to 3 tablespoons of butter in a cast-iron skillet or a cast-iron biscuit pan or line a cookie sheet with parchment paper.
In a large bowl combine the sifted flour, baking powder, salt, and sugar.
GRATE the butter directly into the flour.
Cut the butter into the flour mixture. Combine the butter and the flour until the mixture has very fine crumbles.
Make a well in the center of the flour and add the buttermilk and half and half.
Combine all the ingredients until it forms a soft ball. I like to use my hands to form the ball.
Turn dough out onto a lightly floured surface of the dough and the rolling pin.
Roll dough out to 3/4 inch thick and cut with a biscuit cutter or cookie cutter.
Don't forget to flour the biscuit cutter. When you cut out a biscuit, turn the cookie cutter only 1/4 of a turn.
Melt three tablespoons of butter in the cast iron skillet in the oven.
Place in the cast iron skillet or cookie sheet.
Bake 350 F degrees for 25 minutes or until golden brown.
Remove from the oven and brush with melted butter.
Makes 12 biscuits in 12-inch skillet.