Sift together flour, salt, baking powder and
baking soda.
Cut in the margarine or butter.
Mix in sourdough starter.
Turn out dough onto lightly floured board.
Knead a few times, until all of the flour is
mixed in.
Pat/roll dough to 3/4 in and cut out biscuits;
place them on an ungreased baking sheet.
Bake at 425F for 12-15 minutes, until slightly
brown.
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