I like this quote the best.
Did early humans eat grass? - The Week
There is a slight chance that these early hominin specimens merely ate animals that ate grass. But because most primates don't have "diets rich in animal food... ," argues Lee-Thorp, "we can assume that [early humans] ate the tropical grasses and the sedges directly."
Steak, eggs, potatoes - fruits, nuts, berries and forage. Coconut milk and potent herbs and spices. Tea instead of coffee now and teeny amounts of kelp daily. Let's see how this does! Not really had dairy much, and gut seems better for it.