It was found the experimental results that the apparent viscosity decreased with the increasing shear rate for all samples. Coconut milk is a colloidal system containing oil droplets dispersed in water phase. When shear force is applied, the particles may rearrange themselves into parallel direction with shear force and big particles may break into small particles by shear force. The particles can flow easily as a result of resistance arising from particle–particle interaction which results in decreasing of viscosity (Charm, 1962). After a sharp reduction, the apparent viscosity changed slightly and became steady at higher shear rates. This can be related to the reduction in the size of colloidal aggregates as the shear rate increases (Ibanoglu, 2002)