Jan Sanderson of Sanderson Gardens in Aurora has come to be known as "The Rhubarb King." He joined Dakota Midday to talk about all things rhubarb: its history, recipes, and how it's now being used by several area wineries. Leola, SD, celebrates the Rhubarb Festival every year, and the W.H. Over Museum in Vermillion is hosting "Rhubarb Day" on Saturday.