In large bowl, use mixer to cream butter, crisco and sugar. Add salt and vanilla, mix well. Add eggs one at a time, beating well after each. Stir in flour, mix well. Drop by heaping teaspoonful, 5 cm apart on ungreased cookie sheet. Flatten each. Bake in preheated 190ºC oven for 8-10 minutes, or til edges are light brown. Remove from cookie sheet while still hot. ----