Preheat oven to 350F. Grease and flour 2 9” round cake pans. Sift the flour, salt, baking soda, baking powder and sugar together into mixing bowl. Add the shortening, chocolate and 2/3 cup of the milk. Beat on high speed until smoothly combined; lower the speed to medium and beat for 2 minutes, scraping the bowl often. Add the eggs, the remaining 2/3 cup of milk and the vanilla. Beat 2 more minutes on medium speed. Pour into the prepared pans and bake for 35-40 minutes. Cool for 10 minutes in the pans. Remove to cake racks to finish cooling. Fill and frost with desired flavor frosting. Makes 8-10 servings.