Oak spp. (Quercus spp.)
The acorns of all oak species are edible. There are two separate groups of oaks. If you can distinguish between the two, you’ll find a sweet variety of acorn and avoid the bitter type (unless that’s your preference). White oaks have the sweet acorns while black oaks have bitter tasting acorns. Black oaks contain more tannin than the white oaks do. There are many oak species in Kentucky including white, burr, overcup, chestnut, chinquapin, blackjack, shingle, and willow.
This site explains the process of creating acorn meal - http://askville.amazon.com/acorns-edible/AnswerViewer.do?requestId=17756711.
*photo courtesy of USDA*