Directions

1. Preheat oven to 450F (230C).
2. In a large bowl, whisk flour, baking powder, baking soda, and salt.
3. Cut cold butter into flour mixture until pea-sized crumbs form.
4. Add sourdough starter and 1/4 cup milk; stir gently until dough just comes together, adding more milk if needed.
5. Turn dough onto floured surface and gently knead 4-5 times.
6. Roll to 3/4-inch thickness and cut biscuits with floured cutter.
7. Place biscuits on baking sheet close but not touching.
8. Bake 12-15 minutes until golden brown.
9. Brush hot biscuits with melted butter if desired.
10. Serve warm.