Chocolate Icing

Directions

1. 1
   Mix together the sugar, Hershey's cocoa, Karo and milk in a pan.
2. 2
   Boil at a rolling boil for 3 minutes.
3. 3
   Remove from stove; set pan in cold water.
4. 4
   Add vanilla and margarine.
5. 5
   Beat with electric beaters until it starts to thicken.
6. 6
   Beat until thicker for fudge.