1 box yellow cake mix (I use Duncan Hines)
1 box instant pistachio pudding mix
1 c. sour cream
3/4 c. salad oil
4 eggs
5 oz. chocolate syrup
Green food coloring (optional)

Combine all but the chocolate syrup and food coloring. Mix for 3 to 4 minutes. Pour 2/3 of mixture into greased tube or bundt pan. Add chocolate syrup to remaining batter. Mix and pour over mixture. Use a few drops of food coloring in batter if a deeper green color is desired. Bake at 350 degrees for 1 hour.