Abstract: A method for drying grain with a single drying step is based on the glass transition temperature (Tg) hypothesis. The air used to dry the grain is maintained at a sufficient temperature and relative humidity (RH) such that the grain remains entirely in the rubbery state during the drying process, which prevents the formation of fissures that result from the transition of the grain to the glassy state at the grain kernel periphery. The result of the process is an improved head rice yield (HRY) comparable to longer, multi-step drying methods but which may be accomplished in less time and with lower energy requirements.