Hardness of high fat yog-ice creams was observed to be considerably lower than the low fat control (Figure 4), whilst the addition of 5% inulin. to the low fat yog-ice base reduced the overall hardness of the low fat product. The addition of inulin at 7% and 9% increased the overall hardness of the products (Figure 4). These observations are consistent with those of Guinard et al.,. 13 who demonstrated that ice-cream hardness, as measured. instrumentally, was inversely related to fat and. sugar contents. Any differences in hardness may also be related to changes in freezing points as a. result of higher solute concentrations.