Pourer plug for a receptacle

A pourer plug device for a receptacle having a neck equipped with a sealed lid, and comprising:

• a plug element including means for securing said plug element to the receptacle over the sealed lid;
• a cylindrical core disposed at a center of said plug element;
• cutting means on an inner end of said core, for cutting the sealed lid;
• flexible means for mounting said core on said plug element securing means, for movement from an initial position toward the sealed lid so that said cutting means moves from an initial position into a cutting position in which said cutting means cuts the sealed lid;
• and
• a cap mounted for movement on said plug element, said cap being movable toward the receptacle from an initial position, to move said core and said cutting means to the cutting position, and said cap including a pouring aperture which is closed by an outer end of said core when said cap and said core are in their initial position, and which is opened when said cap is moved back to its initial position relative to said core after a sealed lid-cutting operation.