Slip coefficients for apple sauce in concentric cylinder viscometers were determined using concentric cylinders of different radii according to the theory of Mooney. Wall slip was relatively low for highly shear‐thinning samples and for highly viscous samples; it also decreased with increase in pulp content until tunneling of the sample by the bob condition was reached. Wall slip coefficient varied with the applied torque so that any comparison of slip between samples must be made by determining the slip coefficients for the samples at the same magnitude of applied torqu