Divinity Cake Icing

Directions

1. 1
   Boil sugar, water and Karo until it will spin a thread.
2. 2
   Beat egg whites stiff while syrup is boiling (not too dry).
3. 3
   Pour 1/2 of syrup over egg whites slowly, beating at 10 to 12 on mixer. Let other half of syrup cook until it bubbles real thick.
4. 4
   Pour this over first part and cream until stiff and cool.
5. 5
   Do not spread on cake until it has cooled or it will be sticky.
6. 6
   If it gets too hard, add little hot water to it or sit pot in hot water. If weather is pretty, add cream of tartar; if not, do not add, then add vanilla.