A baby bottle features an interior container for containing a feeding liquid that has an open top, a nipple closing the interior container at its top so that the feeding liquid is contained in the interior container but withdrawable therefrom through the nipple, and an outer container that collectively defines an interior volume in which the interior container is received. The outer container is arranged for containing a heating liquid which is placed in communication with an outer surface of the interior container to heat the feeding liquid by transfer of heat thereto from the heating liquid. The outer container includes a removable cap at its bottom such that the heating liquid may be introduced into the outer container through the bottom to a space delimited by the outer container about the interior container when the cap is removed.
