The present invention relates to a bottle comprising: a lower section, a container for enclosing and holding a first substance, the container being located inside the bottle, a lid for closing the container, an upper section connected to the lower section and for holding a second substance above the lid, a seal located between the lid and the container to assure that the second substance contained in the upper section does not mix with the first substance of the container (9), and a push-release system to displace the lid to permit mixing of the first and second substances. The push-release system includes the container movably mounted in the bottle between a first position where the container does not act on the lid and a second position in which the entire container is displaced to displace the lid to permit mixing of the first and second substances.