British Apple Scones

Name: British Apple Scones
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Cuisine: European, British
Ingredients: 1 cup all-purpose flour ((plain)); ¼ tsp salt; 2 tsp baking powder; ¼ cup butter; ¼ cup sugar; 1 medium Granny Smith apple (peeled, cored, and coarsely grated); 4 Tbsp buttermilk (only use enough to make a soft dough, but not sticky. ); ¼ cup milk (or buttermilk, as needed for brushing the dough); 1 tsp Demerara sugar (or white sugar to sprinkle)