Buttermilk Biscuits

Directions

1. 1
   Preheat oven to 450*F.
2. 2
   Combine the flours, baking soda, baking powder, and salt in the bowl of a food processor or a large bowl (if you are using a pastry blender). Add the butter to the flour mixture and process with a food processor or blend with a pastry blender until mixture resembles coarse crumbs, with small, uneven pieces of butter throughout.
3. 3
   Stir in the buttermilk until wet and dry ingredients are just combined. Turn out onto a floured surface and roll to a 3/8-inch thickness. Cut into biscuits and place on a lightly greased baking sheet. Brush egg white on the tops of each biscuit and sprinkle with kosher salt. Bake for 12-14 minutes, until lightly golden.
4. 4
   Serve warm, if possible, with lots and lots of butter and jam. Reheat in the oven if necessary.