Cream sugar and shortening well. Add egg and mix well. Sift dry ingredients together and add with the vanilla to shortening mixture. Mix well. No need to chill dough. Roll into balls about 3 cm in diameter. Place on greased cook sheets and flatten slightly with fingers. Press down with a glass dipped in sugar or cookie press. Sprinkle with additional sugar. Bake about eight minutes in a 180ºC oven. Cool on racks. ----