I have mine on a diet of 1/3 white fish, 1/3 white potato and 1/3 sweet potato as a liver cleansing diet and some suppliments right now. It's working well.
See this recipe
I was given a bag of dried sweet potatoes in the summer basenji exchange! I'm a huge fan of them & will end up buying more when these are gone. Dallas loves them! Plus, unlike most treats, these he doesn't inhale as quickly so I use them for crate treats. He goes into his crate immediately when he hears me open the bag :p