I have a GSD with an absorption problem and she is on a diet of chicken and rice, or chicken and pasta or white fish with either rice or pasta with a powdered enzyme added. I boil up the chicken till cooked, remove the chicken and then cook the rice in the stock left from the chicken. I use a large stock pot half full of water to cook the chicken pieces and then cook a kilo of rice at a time in the stock until the stock has been absorbed.