yeah the beef livers are a bit more tough, try using the pulsate action on yr blender, pulse then stir, pulse then stir, that usually works, although the last few times ive made the bread, ive just used chicken for that reason.
ummm the consistency is hard to explain. kinda inbetween a soft cookie and a cake, when its cooked, it looks like a cake gone wrong(all flat) It doesnt crumble though, no matter how small you make it, which is why it works for training tibits(i usually cut it into small squares, then when i have them in my hand i half them or quater them). Its almost rubbery like I suppose!! Anyway my puppy love it!!
