Hi feed my dog, the dog I'm pet sitting, and my cats (only partial for cats) PMR and this is how we prepare everything.
This is the first time we prepared our PMR. In this batch we had duck, chicken hearts, chicken feet, chicken drumsticks, duck gizzards, duck necks, beef liver, salmon head, pork cubes, and beef cubes. I use stew cubes because I can get them for very cheap and both the dogs I am feeding are small (under 10 lbs), so it's easier to portion it out I give them more complicated chews by picking up "whole prey" and adding it into their rotation. I usually end up overfeeding on these days, but I haven't noticed weight gain so I'm not worried.
My cat stealing a beef cube lol! He's the reason why the cats are still on part ground -- he's extremely finicky, and his overbite prevents him from chewing up bigger prey. Even when I give him "PMR" meals, I have to cut the pieces into smaller chunks (the size of the beef cubes are pretty much as large as he can get... if he gets anything larger it takes him forever to eat it and he will usually give up later).
Portioning out the organs. This is how I was doing it for the last few times, but I have decided to try doing weekly organ meals instead this time (with a boney part of course).
This time on the menu: Pork tongue, pork kidney, chicken liver, pork heart, chicken heart, whole duck, quails, beef cubes, pork riblets, and beef neck.