Container enabling mixing at least two substances therein

A container comprising:

• a) an outer container adapted to contain outer contents, said outer contents comprising at least one substance, wherein said outer container comprises:
• i. a body comprising a bottom and at least one side wall,
• ii. an elevated area extending inwards from an inner side of the outer container, said elevated area comprising at least one elevated surface, and
• iii. an outer opening adapted to be closed by a lid;
• b) an inner chamber adapted to contain inner contents, said inner contents comprising at least one substance, wherein said inner chamber comprises:
• a. a gripping area adapted such that when said gripping area is coupled to said elevated area a press fit is induced between the gripping area and the elevated area,
• b. at least one compartment, and
• c. an opening area adapted to form a passageway through which at least a portion of said inner contents can exit at least one compartment of said inner chamber when said opening area is opened,
• wherein said opening area is adapted to be closed by closing means comprising one of said elevated area and a lid, said closing means adapted to seal said inner chamber and hold said inner contents separated from said outer contents to prevent any passage of substance between said inner chamber and said outer container,
• wherein upon the opening of said outer opening, said opening area remains closed to maintain separation between said outer contents and said inner contents,
• and wherein the opening area is adapted to be opened up against the outer contents by a force exerted on said inner chamber from outside the outer container, in such way that causes at least partial disengagement of said inner chamber from said closing means, thereby enabling a release of at least a portion of the inner contents from the inner chamber.