No-Cook Marshmallow Frosting

1/4 teaspoon salt
2 egg whites
1/4 cup granulated sugar
3/4 cup white Karo syrup
1 1/4 teaspoons vanilla extract

Beat salt and egg whites until soft peaks form. Add the sugar gradually, 1 tablespoon at a time. Beat until smooth and glossy. Slowly add Karo syrup, and beat until stiff peaks form. Fold in the vanilla extract.