3 3/4 c. powdered sugar (may use homemade)
1/2 c. butter
5 tbsp. skimmed dried milk
1/4 tsp. salt
1/4 tsp. cream of tartar
1 tsp. vanilla
Water to make a stiff mix

Combine all ingredients in large mixer bowl of electric beater. Blend well. Store in refrigerator. To use, remove and let stand at room temperature to soften. The flavor may be changed by adding lemon peel, pineapple marmalade, melted chocolate, or coconut, etc. Comes in handy for cakes and rolls.