Sift the flour, baking powder, salt and spices together; set aside. Cream butter or margarine; gradually add brown sugar, creaming well. Mix in orange peel. Alternately add dry ingredients in thirds and evaporated milk in halves, mixing until blended after each addition. Stir in remaining ingredients. Drop by heaping teaspoonfuls onto lightly greased cookie sheets. Bake at 375 degrees about 12 minutes. Cool cookies on wire rack.