1 T margarine, room temp
pinch of salt
1 lb powdered sugar
1/2 c coco
Mix margarine and salt, gradually add small amounts of powdered sugar stirring well with each addition, adding milk as needed to maintain a smooth consistency. When about half of the powdered sugar is mixed in add small amounts of coco, alternating with the powdered sugar.
Covers one 8 or 9 inch two layer cake.