Biscuits: Self-Rising Flour

This recipe uses self-rising flour, as well as whole wheat flour, along with a bit of sourdough starter.
In a bowl combine:
1/2 - 2/3 cup sourdough starter
1 cup buttermilk (I used water, dry milk powder, cap of cider vinegar)
1/4 tsp. baking soda

In another bowl, mix:
2 cups self-rising flour
1/2 cup whole wheat flour
1 Tblsp. sugar
1/3 cup shortening
1 1/2 Tblsp. butter

Add the wet to the dry, knead briefly, roll, cut, brush tops with melted butter and bake.
Hot oven (375F) convection, about 10 minutes, until starting to turn golden.

Wonderful with butter and honey. Especially this honey!