Life expectancy variation over time Life expectancy - Wikipedia, the free encyclopedia
On the Huff someone posted a pdf about paleolithic people eating grains. The pdf was calling cattail a grain. Cattail is a grass but it wasn't the seeds (which are tinny) they were processing. It was the tubers which have to be pounded to get at the starch. It's a lot of work (I know because I've actually done it) gathering the tubers and processing them for the net calorie return. We questioned if it was worth the effort. I think the best and most efficient source of calories from cattail is the pollen.
Cattail Pollen used as a Cake Flour - YouTube
You can actually buy cattail flour online
Cavemen Ground Flour, Prepped Veggies : Discovery News
The food preparation tools were found to contain the remains of starch grains from various wild plants, including cattail rhizomes, cattail leaves, moonworts, the ternate grapefern, lady's mantle, burdock, lettuce roots, rye, burr chervil root, parts of edible grasses, edible seeds and more.
Flour made from cattails -- which tastes a bit like the plant's distant cousin, corn -- seems to have been particularly popular.
"Our experiments suggest that it is possible to mix this flour with water to obtain a sort of flat bread cooked on hot stones," Revedin said. "It is also possible that the flour was used in a mixed soup."