The temperature dependent dielectric properties (dielectric constant and dielectric loss factor) and thermal properties (thermal conductivity and specific heat capacity) of mashed potato measured in a previous work (Chen at al., 2013) were used in the model. The material properties of air and turntable domains were obtained from Pitchai et al. (2014). By providing the apparent specific heat capacity of mashed potato as a function of tempera-ture from 10 to 120 C, the latent heat involved in phase change was considered in the model.