3 tbsp. shortening
3 oz. unsweetened chocolate
2 c. powdered sugar
1/4 tsp. salt
1/3 c. milk
1 tsp. vanilla

Melt shortening and chocolate in saucepan over low heat. Stir in remaining ingredients; beat until smooth. Place pan of frosting in bowl of ice and water; continue beating until of spreading consistency. If desired, stir in 1/2 cup finely chopped nuts. Frosts a 9x13 inch pan.