Hi Holly-I know you posted this a while ago and have probably figured some of this out. I feed my dogs mostly raw, but I think if you are using this only as a kibble topper and not more than 25% of their diet you can use whatever’s left over from dinner. I personally would avoid the fatty part of the meat. I use a ratio of 80% meat/organs, 5% fruit/veg purée, 15% sweet potato or pumpkin. You might want to omit the rice as that’s probably already in the kibble, if not another carb. Eggs are good, as is a little fish oil, vitamin e and yogurt. Any cooked meat is fine. I avoid pork and fish because I feed raw. There’s a book called See Spot Live Longer that has a few pages on how to supplement your kibble FYI.
