You can find food products labeled "organic" in almost any supermarket these days. But, most shoppers are unfamiliar with the "biodynamic" label. Biodynamic farmers follow the teachings of Austrian philosopher Rudolf Steiner and in 1924 he published his unique recipe for replenishing soil, a recipe that is observed by a persistent movement that continues today. Jeb Sharp of member station WBUR reports on what makes this farming practice different.