In a bowl, cream the butter and sugar. Beat in the egg yolks, milk and extracts. Combine the flour, baking powder, baking soda and salt; gradually add to creamed mixture. Cover and refrigerate dough for 1 hour or until easy to handle.
On a lightly floured surface, roll out dough to 1/8-in. thickness. Cut with a floured 3-in. star cutter. Place 1 in. apart on ungreased baking sheets. Press an almond in the center of each. Brush with egg white; sprinkle with sugar.
Bake at 350° for 8-10 minutes or until lightly browned. Remove to wire racks to cool.