transferred to the vapor phase without going through the liquid phase. Thus the pores are preserved and those can be rehydrated quickly. The loss in terms of flavor can also be minimized using this method. Since freeze drying is time consuming, this method is applied only for high premium or heat sensitive materials (Cohen & Yang, 1995). Microwave freeze drying can be applied in two different ways, such as i) freeze drying accompanied concurrently with the help of microwave and ii) microwave
drying applied after freeze drying (Duan, Zhang, Mujumdar, & Wang, 2010a).