This method describes the detailed procedure for measuring the apparent viscosity of molasses, the basis of which was Officially adopted.1 It employs the rotating cylinder principle for undertaking the rheological measurements of the molasses sample, with measurements ideally being undertaken at a number of shear rates. The rheological properties of the molasses sample are also described in terms of the consistency and flow index, the two parameters of the Power Law model for fluid flow behaviour [2,3,4].