In a medium to large-sized mixing bowl whisk together the flour, sugar, baking powder, baking soda and salt. Add the almonds and stir to combine.
In a small bowl, whisk together the buttermilk and the vanilla. Cut the cold butter into the flour mixture and stir to combine. Add the buttermilk mixture to the flour mixture and stir to combine. Gently knead the dough together in the bowl until it is just combined. Be careful, however, not to mix and knead the dough too much—you just want to combine the ingredients. If you have to add a tablespoon more of buttermilk, do so, but otherwise just gently pack the mixture into a ball and then turn dough out onto a work surface.
Gently pat and shape the dough into a rectangle approximately ¾ to 1 – inch thick. With a knife or bench scraper, cut the dough into six triangles. At this point, either freeze the cut scones in a zip lock bag or place them on Silpat or parchment paper-lined cookie sheet.
Brush the scones with the milk and sprinkle with the sugar. (Note: you can brush the scones with anything you like: eggs, egg whites, cream, even water. If you don’t have turbinado or demera sugar, regular granulated sugar is a fine substitute.)
Bake the scones for approximately 15-18 minutes. (When you bake frozen scones, remove them from freezer while oven preheats. Brush with wash just before baking and bake 18-23 minutes.) Serve immediately.