the paleo diet I follow is like the one promoted by Robb Wolf in The Paleo Solution. If you know one thing about Robb, its that he's not a vegetarian. The vegans hate him, actually. his version is foods that were available to our pre-agricultural ancestors. Grass grains? Not really. Modern hybridized/GMO grains are nothing like the ones available to Paleolithic humans. Grass fed meat, organ meats, organic heirloom veggies. Fermented fruits? no problem! Fat plus berries? I think you are thinking of pemmican which is fat plus pounded dried muscle meat. Berries optional. I use this for hiking, camping, motorcycle trips where being able to pack a lot of non-perishable nutrition into a small space is desirable. Yep, have even eaten bugs and liked them. Mealworms fried in coconut oil are yummy!