Over thirty years ago, I went on a trip with an old guy who had this all figured out.
He had no backpack bag, only a frame, so he lashed stuff onto the frame that he carried. For shelter, all he had was a large plastic tarp that he threw over a cord between two trees. For a sleeping bag, he had an old army surplus bag lashed on. For cooking, he had a box of matches, and he could pick up firewood. For food, he started with one big can of Dinty Moore Beef Stew. He opened it with his SAK, heated it, and ate it. Then he rinsed out the can and filled it with creek water to boil, and made his coffee there. While that was working, he opened a can of peaches and ate it. He had another can of something for breakfast. When he was done, all of the empty steel cans nested inside one another, and it was lashed onto the pack frame for the journey back out.
I would want to buy the Dinty Moore Beef Stew in a titanium can.