I'd say a chicken leg quarter is a pretty bland diet.....
And easy.
No cooking required!!
:wink::smile::biggrin:
ETA: The problems you've been having sound awfully similar to the way my Corgi started out. I know the meat and rice thing is recommended by a lot of vets, but these are the same vets recommending science diet for heaven's sake, so why do we listen to them on it and what makes this recommendation any more credible than SD?
I personally would not want to give something as carb heavy as rice or potato, especially with what I know from my experience with Grissom, how sensitive your breed is, and the history of tummy issues you've had with him. I would go with chicken. JUST chicken. Obviously I recommend raw with bone to keep stools solid, but IMO 100% chicken in ANY form (cooked, raw, bone included, bone not included) is going to be far superior than and rice mixture.