1 1/2 c. sifted unbleached flour
1 tsp. salt
2 tbsp. sugar
1 1/2 c. sourdough starter
3 tsp. baking powder
1 1/2 tsp. baking soda
1/4 c. shortening, melted

More baking soda may be added if the starter is very sour.

Place flour in bowl, add starter in a well, then add melted shortening and dry ingredients. Mix lightly and turn out onto a lightly floured board and knead until the consistency of bread dough, or of a satiny finish. Pat or roll out dough to 1/2" thickness, cut and put on a greased pan. Coat all sides of biscuits with melted butter. Let rise over boiling water for 1/2 hour. Bake at 425 degrees for 15 to 20 minutes.