Thanks for contributing this info, TBoneMitch!
Last night I took from my freezer dried berries (blueberries, blackberries, cherries, strawberries, and red raspberries) that I dehydrated a couple years ago. They were very hard (frozen). I put them in my old coffee grinder and ground them down to fine powder. I continued grinding my dried bison (that I dried using a dehydrator a couple years ago... it was the round, which I was told made the best jerky/pemmican). I then mixed all of this stuff together and continued grinding into a very fine powder. The native americans called this "beat meat", and I call mine "sweet beat meat", cuz with those mixed berries in there it makes the whole lot (about 8 - 10 cups) smell SO GOOD!!! It is now the consistency of white flour!... or the finest espresso!
While grinding and mixing this wonderful "sweet beat meat", I continued rendering the fat. After nearly 6 or 7 hours it seemed as though nothing more was going to happen. Mind you, this stuff never smoked or burned, but I was wondering if it needed to go that long (it was only a pound of fat) or if there is any advantage/disadvantage to doing it this long (once again, I never saw it bubble or anything, and am still wondering about getting out all the moisture from the liquid). I read on the internet that the longest shelf life for pemmican is if you pulverize meat and berries into a powder, and if you "double render" the fat, to remove all the moisture. It is moisture that causes the pemmican to go bad over time. I had set my sights on making the most "authentic", long lasting pemmican, and so will probably avoid the trail mix on this first batch. I have read on the internet recipes that include all sorts of nuts, honey, etc. .... but, I have also read about the most traditional containing only dried meat and berries, ground to a fine powder (or I guess they were beaten with rocks down to that fine powder!)
Tonight I plan to mix some of this powder with some "liquid gold", as I call it, (rendered bison back fat), and stir it up and then spread it into a rectangular glass baking dish, using wax paper to press it down. Should I put wax paper into the dish first, and sandwich this pemmican between two sheets of wax paper, or what? Anyone, please let me know. I will only be trying a small amount, cuz I don't want to waste this powdered meat (it took SO long to get it to that state!). How much should I use (in other words, how thick should the spread be?). And, what is the "proper" ratio of fat to meat/berry mix?
Thanks to all who are contributing to this thread. This will be a good source for anyone interested in making this very paleo food!