1 pkg. Duncan Hines yellow cake mix
1 pkg. pistachio instant pudding mix
1 c. club soda
1/2 c. oil
4 eggs
1 c. chopped walnuts

Combine all ingredients and bake at 350 degrees for 40 to 50 minutes, until done. Bake in tube pan. Cool. Split to ice.

ICING:

1 pkg. pistachio instant pudding mix
3/4 c. milk
2 tsp. confectioners' sugar
1/2 c. heavy cream, whipped

Add everything to whipped cream. Spread on cake.