Add flour mixture to butter mixture alternately with milk, beginning and ending with flour mixture. Stir together baking powder, salt, and 3 3/4 cups flour in a medium bowl. Pistachio Pound Cake While many pound cake recipes begin by creaming together butter and sugar, this pound cake follows a different method to make a pound cake that is more interesting with different textures and delicate flavors. Pecans and coconut add flavor and texture to this classic cake. This would be a great cake for St. Patrick’s Day. You could add a little green food coloring to either the frosting or the cake mix and use this pistachio swirl cake to celebrate the day. Although beware it disappears quickly. 7-Up soda is added to the cake instead of water, but you may use club soda, Sprite, or a similar carbonated drink. This pistachio pound cake with a confectioners sugar glaze is a dense, moist, nutty pound cake with a tight crumb that will satisfy any and all pistachio lovers. This is going to whip lots of air in which will help the cake rise and give it a lighter texture. Pistachio Swirl Cake is so easy because it is made with a mix. And it makes an ample amount so you'll have plenty to share. This easy Watergate cake is made with pistachio pudding mix, whipped topping, and a cake mix. Tips for making Classic Southern Pound Cake: There is no leavener in this cake so it is very important to beat the butter, cream cheese, and sugar for at least 5 to 7 minutes.