or sour milk
Measure and add soda and salt. Sift again.
Add sugar and mix thoroughly.
Add buttermilk to dry ingredients, beat until smooth.
Spread dough ¼ inch thick on flat, greased pans.
Bake at 375℉ (190℃) F for approximately 15 minutes or until crisp and a golden brown.
Let cool thoroughly and grind through a food chopper.
Crisp in oven just before serving.