The increase in the inulin content led to a significant increase in plastic viscosity (Fig. 1a). In a study that investigates sucrose substitution with inulin and polydextrose in chocolate, Aidoo et al. (2014) achieved the highest Casson viscosity by completely substituting sucrose with inulin. Shah et al. (2010), which measured chocolate viscosity at 55, 30, 27 and 12 C, remarked that the chains formed by inulin might affect crystallization and the aggregation of chocolate particles and increase viscosity.