Preheat oven to 350˚F, flour a cutting board, and butter a baking sheet.
In one mixing bowl, combine buttermilk, eggs, vanilla, and lemon zest.
In another mixing bowl, combine flour, sugar, baking powder, baking soda, and dash salt.
Cube cold butter and use your fingertips to mix it into the flour until the butter chunks are pebble-sized.
Add the wet batter to the flour and butter mixture and combine.
Scoop the (somewhat wet) batter onto the cutting board into a log shape. Lightly coat by sprinkling flour. Using a floured knife, cut the log into triangles or rectangles and transfer the scones to the baking sheet.
Bake at 350˚F for ~25 minutes until the scones are golden.