I had canned moose in college that my grandparents sent with me to school. The lid had rust on it but was still sealed. We ate it and it was delicious, I later found out that had been canned before I was born. It keeps for a long time. I've eaten it right out of the jar before. On an antelope hunt to Wyoming with a friend we brought along a flat of canned venison and two bags of potatoes.
Cooked the potatoes, dumped jar into them, stir and eat with a little salt and pepper. It was pretty good.
One of our favorite meals is just dump a jar into the skillet, water and all. Throw in some sliced peppers and onions and a little taco seasoning. Eat on a tortilla with sour cream and cheese, lettuce, salsa etc. Whatever you feel like. Kind of a taco fajita thing and it's dang good and super fast to make
