Chicken liver and rice dinner for your furry friend. You can use lamb, calf, pig or whatever liver you can afford. You can vary the amount of and type vegetables, and rice. It may not look great to you and me, but Buster loves it and at only around 45p a portion it saves me a fortune.
Don't feed this every single day as too much liver can be bad. Intersperse the liver meals with something else homemade.