Pemmican is made from UNCOOKED, UNSEASONED, but dried meat. You can use lean ground beef if you want, but it will result in a funky flavored final product. As Birdman has outlined you will end up with jerky, and that is great, if that is what you are after. But jerky isn't cooked either, it is seasoned, dried meat. A dehydrator will dry, but not cook your meat. "Back in the day", jerky was made by drying unseasoned strips of meat on racks in the sun, sometimes over a low heat, smokey fire to give it some flavor. Pemmican just took that jerked meat and mixed it with tallow of some type to preserve it for longer storage and future use. There is a branded jerky called "Pemmican", but it is jerky, not pemmican. If you would follow the steps Birdman posted on 12-04-06 or that I posted on 12-05-06, you will end up with pemmican . . . if you add seasonings, dry the meat, grind it and add fat, you will have ground jerky with fat added - might be good, too. If you boil lean ground beef before drying it, you will have boiled ground beef with no (or little) nutritional value and little flavor.