Density and thermal conductivity of food items can be expressed as a function of temperature, based on the combination of the major constituents of individual food items ( Hamdami et al., 2004a and Watzke et al., 2010). The challenge in solving Eq. (1) is the inclusion of sensible heat and latent heat of phase change in the mushy zone. For a food system, a method based on latent heat has to be developed, such that, a single energy balance equation is required for the entire domain consisting of coexisting solid, liquid, and mushy zone. The most commonly used and reliable method is the apparent heat capacity (AHC) method ( Kumar and Subhendu, 2009 and Pham, 2006). In this method, latent heat is included in the sensible heat to produce a heat capacity curve with a large peak around the mushy zone, which lies between the temperatures T1 (thawed side) and T2 (frozen side), as depicted in Fig. 1. The original heat transfer equation (Eq. (1)) is modified as Eq. (2), in which Cp(app) is the apparent heat capacity (AHC) expressed in J/(kg•K).