Abstract: The present invention provides a container made up of two receptacles that can be assembled together via respective ones of their faces. According to the invention, the assembly face of each receptacle comprises in similar manner: a transversely-extending step in the form of a groove having a bottom trough; a bottom abutment; and top abutment; such that when in the head-to-tail position, the trough of the groove of each receptacle co-operates with the edge of the groove of the other receptacle, and the bottom abutment of each receptacle co-operates with the top abutment of the other receptacle, in such a manner as to assemble the two receptacles together, blocking relative displacement between them both in the transverse and in the longitudinal directions. The invention is applicable to packaging a variety of products, and in particular to packaging liquids.