Pemican that was consumed by the HBC, Manitoba Metis, was predomitetly made from Bison (buffalo) which is a very rich and tasty meat also seasoned with ripe berries. We made ours from wild game (mooze,deer, wood bison, wapiti..) that we harvested in our neck of the woods. Wild meats are very lean compared to pork or even beef needing the addition of fat. Rendered black bear fat is fantastic for all uses. I agree that pork (maybe salted) is not the tastiest meat to start with and if badly prepared or not stored well.... Start with good ingredients and you will get good results. If they were already on salted foods before even the pemican then it would have been also a lack of vitamins
The first French outposts often died out from a combination of diease (mostly scurvy) caused by vitamin deffeciency (both C and D) and from lack fresher foods (they had mostly salted pork or fish) and of little outdoor physical activities in winter (they stayed couped up in small, smoky, stuffy cabins).
Only through our timely intervention of pine and cedar teas to boost their vit. C (we got tired of the dead bodies all over the place
) and hunting for fresh meats vit. D did they finally understand the need for proper varied nutrition and activity in winter.
The bitterness (to them) of our teas resulted in the popularity of maple sugar products, (sugar, syrup, taffy, candies, you could say the origins of {a spoonfull of sugar makes the medicine go down} etc...)
Later on we gave them Maize, Squash, Beans....Finally they sent over some farmers who could augment their basic foods. Yo!!!