Recipe - Mary Rogerss Sourdough Biscuits

One half cup Active Starter
2 One half cup Flour
1 tablespoon Sugar
2 teaspoon Baking Powder
One fourth teaspoon Cream Of Tartar
1 cup Milk
1/3 cup Lard or Shortening
Three fourths teaspoon Salt
One half teaspoon Baking Soda

At bedtime make a batter of the half cup of starter, cup of milk, and 1 cup
of the flour. Let set overnight if the biscuits are wanted for breakfast.
If wanted for noon, the batter maybe mixed in the morning and set in a warm
place to rise. However, unless the weather is real warm, it is always all
right to let it ferment overnight. It will get very light and bubbly.

When ready to mix the biscuits, sift together the remaining cup and a half
of flour and all other dry ingredients except the baking soda. Work in the
lard or shortening with your fingers or a fork. Add baking soda dissolved
in a little warm water to the sponge and then add the flour mixture.

Mix into a soft dough. Knead lightly a few times to get in shape. Roll
out to about One half inch thickness or a little thicker,and cut with a biscuit
cutter. Place close together in a 9 x 13inch pan, turning to grease tops.
Cover and set in a warm place to rise for about 45 minutes. Bake in a 375
degree oven for about 30 to 35 minutes. Leftovers are good split and
toasted in a sandwich toaster.

From the "Complete Sourdough Cookbook" by Don and Myrtle Holm.