Abstract: The invention relates to a sludge retaining device for a drain of a sanitary basin, in particular of a sink or the like, comprising a sieve surface, which is formed extending from a higher to a lower surface region, and a handle device, which is arranged in the region of the lower surface region on the sieve surface, wherein the handle device comprises a flow disruption device, in particular break-away edge, for the flow of a liquid, which flows towards the lower surface region, such that the flow of the liquid is at least partially broken up by the recess.