The NIGHT BEFORE you want to eat these biscuits, add flour, milk, sourdough starter and melted butter to a large glass bowl. Mix well and cover with a tea towel overnight to ferment for approximately 8-12 hours.
The NEXT MORNING, add flour, salt, baking powder, sugar and baking soda to your fermented wet ingredients. Mix well until fully combined. On a clean, well-floured work surface roll out dough and cut with an overturned drinking glass or make drop biscuits.
Place on greased baking sheet. Bake at 400 degrees for 15-17 minutes, until golden brown. Repeat the process until all biscuits are baked. Serve them up fresh with chili and use leftovers for a delicious biscuits and gravy breakfast.