Cloud frosting recipe

LINK: http://alwayswithbutter.blogspot.com/2011/04/pumpkin-cupcakes-with-cloud-frosting.html

LIST:
2.5 cup suar
6 egg whites, rm temp
.5 cup water
1 tbsp vanilla
.5 tsp cream of tartar

HOWTO:
combine sugar, egg whites, water and cream of tartar in the bowl of electric mixer, whisk until foamy. Set bowl over a pan of barely simmering water and whisk until sugar dissolve and mixture is warm to the touch, about 3-5 minutes. Now use the electric mixer, beat on high speed until frosting forms stiff peaks, about 12 to 16 minutes. Add vanilla and beat until combine.