Homemade Biscuit Mix
Combine flour, baking powder, sugar and salt in a mixing bowl. Add oil and mix with a fork or pastry blender; you should have small lumps throughout the mixture.
Store in an airtight container in a cool, dry place for up to three months.
TO MAKE BUTTERMILK BISCUITS:
Preheat oven to 450 degrees F (230 degrees C). Lightly grease two baking sheets, or line the sheets with parchment paper. Combine 2 1/2 cups biscuit mix, 2/3 cup buttermilk, and a pinch of salt (optional). Stir together to form a soft dough. Turn dough out onto a lightly floured surface and knead briefly, about 10 times. Cut dough into 12 equal pieces and place on prepared baking sheets. Brush tops of biscuits with milk or egg wash, if desired. Bake 8 to 10 minutes or until light brown.
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