Although the extrapolation method merely gives an approximation of the yield stress, it provides a means of knowing the influence of solids and temperature on the shear stress that must be overcome before the pure´e starts to flow. For the range of temperatures investigated, the 25 Brix blueberry pure´e showed yield stress values that are 18–20 times more than the 10 Brix pure´ e. Again as temperature of pure´e was changed from 25 to 60 1C, the yield stress decreased by nearly 50%.