Seven-Minute Frosting ... named for the length of time it must be beaten in the final stage ... Made with beaten egg whites; it’s similar to meringue, and has a delicate flavor and lighter-than-air texture. It's one of my favorites, and it's excellent for most types of cakes and/or cupcakes.
This easy and old fashioned SEVEN MINUTE FROSTING recipe yields a really white, soft and fluffy icing that tastes like marshmallows. Made with no butter and no shortening! Great for icing cakes and cupcakes! From cakewhiz.com