Put butter into freezer for about 20 minutes before beginning! Preheat oven to 450 degrees.
Sift together flour, sugar, baking powder, baking soda, and salt in a large bowl. Grate frozen butter into the bowl. Using a pastry blender (or two forks), cut the butter into the dry ingredients until the mixture becomes coarse crumbs (with butter about the size of small peas).
Create a "well" in the middle of the crumbs. Add buttermilk. Mix the ingredients together until combined, and you have a slightly sticky soft dough.
Turn the dough out onto a floured work surface. Flour your hands and shape dough into a rectangle. Gently fold the dough onto itself 6 times. End to end, rotating between folds. Once done, you should have a rather tall square piece of dough. Pat this down until dough is between 1 and 1½ inches thick.
Cut biscuits out of dough (using a 2½ inch biscuit cutter OR you can use a half pint canning jar (like I did). Try not to twist the dough as you make the cuts. If you have leftover dough, you can combine them and cut some more biscuits (but only do this once or twice or the dough will flatten).
Place cut biscuit dough onto parchment paper-lined baking sheet. Place them very close together, so that they are ALMOST touching.
Bake biscuits in preheated 450 degree oven for 12-15 minutes, or until they are golden brown on top.
Brush the finished biscuits with melted butter right when you take them out of oven OR take them out right before they are finished, brush them with melted butter and pop them back in oven for last couple minutes. (I've done BOTH).
Serve, and ENJOY!
