Yam, cultivate and cook
There's a lot of sophistication in "primitive" agriculture. Humans have always been as intelligent and ambitious as they are today; they just didn't always have today's tools.Yams always make me think of Gone with the Wind. The climax of Act III (not labeled as such, but stories are stories) is Scarlett O'Hara at her family's plantation. Yankee soldiers have come through and taken every scrap of food, but they didn't recognize the yams as food, because it's a Southern thing (yams in the South came over from Africa with the slave trade). So after they leave, she goes outside, digs up a yam with her bare hands, and starts eating it raw. And then she gives this amazing speech... (edited for book-quoted text)"As God is my witness, as God is my witness they're not going to lick me. I'm going to live through this and when it's all over, I'll never be hungry again. No, nor any of my folk. If I have to lie, steal, cheat or kill. As God is my witness, I'll never be hungry again."And that's the Scarlett O'Hara of the rest of the book/movie, the relentlessly resourceful one who will never allow herself to be victimized by anything or anyone.