In a large bowl, beat shortening and cream cheese until blended. Add sugar; beat until creamy. Beat in egg yolk, lemon extract and peel. Combine the flour and salt; gradually add to the creamed mixture.
Using a cookie press fitted with the disk of your choice, press dough 1 in. apart onto ungreased baking sheets. Bake at 350° for 9-12 minutes or until set (do not brown). Remove to wire racks to cool. Decorate as desired.