In a mixing bowl, cream butter and sugar. Stir in extract. Add 1-1/4 cups flour; mix well. Knead in remaining flour. Cover and chill at least 2 hours. Roll out on a lightly floured surface to 1/4" thickness. Cut with a small cookie cutter (1-1/2 to 2"); place on ungreased baking sheets. Beat egg white until foamy; brush over cookies. Sprinkle with sugar and almonds. Bake at 350 degrees for 7-8 minutes or until lightly browned. Cool