1 box white cake mix
2 boxes Royal pistachio pudding
1/2 c. milk
1/2 c. water
5 eggs
1/2 c. cooking oil

ICING:

1 box pistachio pudding mix
3/4 c. milk
Lg. tub Cool Whip

Mix together thoroughly. Grease and flour bundt pan. Add cake mix, pudding, oil, milk, and water; mix well. Add to this mixture, the 5 eggs, one at a time, mixing thoroughly after each egg is added. Bake in bundt pan 25 minutes at 350 degrees then reduce heat to 325 degrees and bake another 30 minutes (on lowest rack). Cool 10 minutes and remove from pan. Let cool thoroughly before icing. Refrigerate after icing cake.