In large bowl combine sugar,salt,margerine,egg yolks,vanilla and extract. Beat on medium speed. Add flour. Mix well. Roll dough into 3 cm balls. Dip into egg whites then nuts. Place on greased cookie sheets 5 cm apart. Make a deep depression in center of each cookie with fingertip. Bake 10-12 minutes until firm to the touch. Fill with jelly while warm. ----