Drinking any sugary soda will break your fast. Which is the whole point of OMAD. your body goes into fast mode and starts burning fat and repairing and recycling bad cells. Ginger ale is no exception. it has sweeteners whether it be toxic artificial sweeteners or regular sugar. including high fructose corn syrups. that make it sweet. otherwise, it would just taste like a ginger root in water. So in short. it's not a good idea for OMAD.