A tiltable lid assembly, comprising: a base configured to be secured to a cup that holds a liquid substance, said cup including an opening for release of the liquid substance; said base including a first end having an opening that is configured to be aligned with the opening in the cup to permit release of the liquid substance from the cup; a cap assembly secured to the base, said cap assembly including a first end having a first seal that is configured to be positioned over the opening of the base to seal the liquid substance within the cup and a second end opposite said first end; said cap assembly is configured to be tiltable along an axis, wherein in a first position on the axis the first seal is positioned within the opening on the base to prevent the liquid substance from flowing out of the opening and in a second position on the axis the first seal is displaced from the opening on the base to permit the liquid substance to flow out of the opening, and releasable locking means that secures the cap assembly in the first and second position, characterised in that the releasable locking means comprises: a latch connected to the cap assembly; and biasing means connected to the cap assembly that is configured to exert force on the latch; wherein in the first position, the biasing means is configured to force the latch to secure the first seal within the opening of the base to prevent the liquid substance from flowing out of the opening; and wherein in the second position, the biasing means is configured to force the latch to secure the first seal in a position that is displaced from the opening on the base to permit the liquid substance to flow out of the opening. a base configured to be secured to a cup that holds a liquid substance, said cup including an opening for release of the liquid substance; said base including a first end having an opening that is configured to be aligned with the opening in the cup to permit release of the liquid substance from the cup; a cap assembly secured to the base, said cap assembly including a first end having a first seal that is configured to be positioned over the opening of the base to seal the liquid substance within the cup and a second end opposite said first end; said cap assembly is configured to be tiltable along an axis, wherein in a first position on the axis the first seal is positioned within the opening on the base to prevent the liquid substance from flowing out of the opening and in a second position on the axis the first seal is displaced from the opening on the base to permit the liquid substance to flow out of the opening, and releasable locking means that secures the cap assembly in the first and second position, characterised in that the releasable locking means comprises: a latch connected to the cap assembly; and biasing means connected to the cap assembly that is configured to exert force on the latch; wherein in the first position, the biasing means is configured to force the latch to secure the first seal within the opening of the base to prevent the liquid substance from flowing out of the opening; and wherein in the second position, the biasing means is configured to force the latch to secure the first seal in a position that is displaced from the opening on the base to permit the liquid substance to flow out of the opening. a latch connected to the cap assembly; and biasing means connected to the cap assembly that is configured to exert force on the latch; wherein in the first position, the biasing means is configured to force the latch to secure the first seal within the opening of the base to prevent the liquid substance from flowing out of the opening; and wherein in the second position, the biasing means is configured to force the latch to secure the first seal in a position that is displaced from the opening on the base to permit the liquid substance to flow out of the opening.