Step 1

Whisk together  flour, salt, baking soda, and baking powder in a large bowl.  Cut in butter until like coarse crumbs.  Add sour cream and mix with a spoon until holds together.

Step 2

Roll out on a floured surface and cut out with biscuit cutter.  Place on sprayed baking sheet. Bake in preheated 425 degree oven 12 to 15 minutes until golden brown on top.  Makes about 18 biscuits.