Professional Frosting...so I'm told

Why I Love This Recipe
This recipe was given to my mom by a church friend who SWORE it was "the" professional frosting recipe used by the makers of specialty wedding cakes. Whether or not that's true, it's still a family favorite -- airy and smooth, soft, not too sweet, great for decorating and tastes great even days later. You can use butter in place of Crisco (I'm not a Crisco fan), but your batter will be cream-colored instead of pure white, a factor that may matter if you are adding food coloring. Also, I prefer almond to vanilla flavoring (the color won't be affected).
Ingredients You'll Need
1 lb powdered sugar
3/4 C Crisco or butter
1/4 C Pet Milk (evaporated milk)
1t vanilla or almond flavor
Directions
Blend sugar and shortening/butter
Add milk and vanilla/almond
Beat on HIGH 10 minutes