Old fashioned 7 minute frosting

Directions

Combine the egg whites, sugar, water, and cream of tartar in the top of a double boiler. Mix well.
Place over boiling water and whisk constantly until mixture reaches peaks. This will take at least 7 minutes, but most likely closer to 10.
Remove from the fire.
Add the vanilla and whisk until it’s thick enough to spread.
Makes 5-6 cups of frosting.
notes
Calories shown are based on a 15-serving cake frosting recipe, with 1 serving of frosting for 1 slice of cake (about 1/3 cup).

Enjoy !