Ruth's Mile high Biscuits are legendary in the state of Utah! This recipe is directly from Ruth's Diner in Emmigration Canyon.
Combine 2 1/2 cups flour, salt, sugar, baking powder, baking soda and butter till crumbly, using a pastry cutter, or two knives, or your fingers.
Add the buttermilk, egg and water. Mix with a fork or large utensil just until all of the wet and dry ingredients are combined using a folding motion, instead of stirring.
Pat out lightly onto a floured surface into a 6x6 square. Cut into 9 even pieces. Move to a 8x8 or 9x9 square ungreased pan to bake.
Bake at 425 for 12-15 minutes. Remove from oven and serve immediately!