In a 2 cup of whole milk, add 1 tablespoon of Lemon juice and a pinch of salt. Heat it for 2 minutes in the microwave and wait until the courts start to form. Stir, and add to the flour. You may add an egg just before adding buttermilk, or mix an egg with the buttermilk and add it together. Also, you may add cold butter -- when you mix together, flour, salt, soda, then I would sometimes add cold unsalted butter. The dough is just a bit richer.