This is my very first post but I have been doing some reading on this diet and I really like it. I hope my advice is consistant with the plan as I believe it to be.
I think one point here is that you are cooking buffalo stew meat (if I read that correctly), this is a lean meat, so you have to add fat. I'm not talking about a nut or vegetable oil, I'm talking animal. Bacon is a great flavor addition to buffalo meat, cut it up into small bits and add it to the stew, you could also just mix in regular beef as well.
Also as others said add acid, I think Worcestershire sauce is a great flavor enhancer if you can deal with the salt.
I'm just a recovering biker trying to play middle manager. Do you think they can see my in through mi button-down?