Abstract: A spout includes a base frame fittable about a designated package pour opening surface area, an opening assembly moveably coupled to the base frame and adapted to at least partially cut/rupture/open/pierce the pour opening surface area, and a control device configured to control the opening assembly. The control device comprises at least one interaction element connected to the opening assembly, at least one control ring rotatably coupled to the base frame and at least one interaction member connected/coupled to the control ring and configured to interact with the interaction element. In use, upon rotating the control ring, the interaction member interacts with the interaction element to induce translation of a cutter of the opening assembly for controlling the opening assembly from a rest configuration to an operative configuration and an axial end portion of the interaction member is arranged within a rotation plane fixed relative to the base frame.