1/2 c. solid shortening
1/2 c. butter
1 tsp. vanilla
4 c. powder sugar (4 c. in a lb.)
2 tbsp. milk

In large bowl, cream sugar and shortening. Add vanilla. Gradually add sugar, beating well on medium speed. Scrape bowl often. When all sugar has been mixed in, icing will appear dry. Add milk and beat at high speed until light and fluffy. Keep icing covered with damp cloth until ready to decorate. For best results, keep icing in refrigerator when you're not using. This icing is ideal for decorating. It can be kept in an airtight container for 10 days in refrigerator. Re-whip before using. Makes 3 cups.