7-Up Cake and the Creaming Method

Buffy asks: I want to bake a 7-up cake but it comes out dense and/or heavy, yuk! This recipe doesn’t call for baking power or baking soda!. So could I use 1 tsp baking powder ?

Baking S.O.S. says: Interesting challenge!

I have never baked a 7-Up cake before, so I wasn’t sure what ingredients [...]