For shortcakes: Preheat oven to 400°. Line a baking sheet with parchment paper. In a medium bowl, combine flour, granulated sugar, tea (or contents of 2 tea bags), baking powder, salt and baking soda. Using a pastry blender or your fingers, cut or rub in butter until mixture resembles coarse crumbs. Make a well in the center. In a small bowl, combine sour cream, egg and milk. Add to flour mixture; stir with a fork just until moistened.