After a long history of theoretical predictions, turbulence induced poloidal flows—'zonal flows' (ZF)—are nowadays ubiquitously detected in tokamaks and stellarators. The difference in character of ZFs in a torus in comparison with those in a cylinder is discussed. The reduction in symmetry leads to a fundamentally three-dimensional flow pattern, a second oscillating flow type and several additional interaction mechanisms between flows and turbulence equal in importance to the perpendicular Reynolds stress of the two-dimensional flows in a cylinder.