I made homemade oyster dressing, the last few times i made it it tastes bitter, could it be too much sage?

it is ped down from generations..i use the same ingredients that my mother used, broken dryed bread, celery, onions, sage, broth, but it seems to taste bitter an salty (i use very little salt if any). as i mix it before cooking i taste test it and add more sage as i go, will sage make it salty tasting? and bitter? ..i don't measure just put some in and taste. thanks..teresa