The viscous behaviors of the milk coffee and milk separation samples were measured using a dynamic shear rheometer with a 4 °C/40 mm cone rotor and the temperature module of the plane plate (Constant Stress Rheometer, CS-10, Bohlin Instruments Ltd., USA). Samples were placed in the temperature-controlled measurement plate and allowed to equilibrate to the required temperature (5 °C or 40 °C) for 3 min prior to making the measurements. The viscosity was acquired as a function of the shear stress (0.06–0.6 Pa).