2 1/2 c. sugar
1/2 c. corn syrup
1/2 c. cold water
1/4 tsp. salt
10 marshmallows
2 egg whites
1 tsp. vanilla

Boil sugar, syrup, salt and water until speed until stiff, continue beating and pour syrup over egg whites slowly, takes 3 or 4 minutes longer. Add vanilla and marshmallows and continue beating until icing forms peaks when lifted with spoon.