I read an article a while back that said you could substitute a can of soda for the oil/butter and eggs in a packet cake mix so decided to give it a try. I must admit I was a bit sceptical!, I mean how does a can of soda substitute for eggs, butter and or oil?, but it worked, the cake rose perfectly and was tasty and moist. Just choose a packet cake mix and a flavoured soda that will complement the cake flavour, I went for an orange and poppyseed cake mix with fizzy orange soda. but there are lot's of flavour combos that can be used eg. ginger cake with ginger ale, lemon cake with lemonade, sprite or lemon, chocolate cake with coke, the varieties could be quite endless! This was so quick and easy to whip up, no measuring butter or oil, no extra greasy items to wash, and ideal if you have no eggs. A quick and tasty afternoon treat. Ingredients 1 packet cake mix, your choice 355 ml flavoured soda, your choice. Method 1. ...