No Cook Boiled Icing

Tried this old recipe for son's birthday. Came from my Mom's recipe file ,have no idea where it came from. It looks, tastes, and spreads like a boiled icing but never fails.

• Ready In: 3 mins
• Serves: 12

Ingredients

• 1  cup white sugar
• 1  unbeaten  egg white
• 1  teaspoon vanilla
• 1⁄4 teaspoon cream of tartar
• 1⁄2 cup boiling water

Directions

1. Beat all ingredients together until stiff enough to frost cake with.
2. This recipe makes enough icing for a large angel or chiffon cake.