An apparatus is disclosed and includes a can, which has an end wall incorporating a vent panel and a pouring panel, both panels being breakable and presenting a contour defined by a rupture line. A first actuation tab is externally affixed to the vent panel and manually and angularly displaceable, in order to be separated from the can jointly with the vent panel. A second actuation tab, which may be actuated after the vent panel is removed, is externally affixed to the pouring panel and provided with an end lower tooth, which is pressed against the rupture line of the pouring panel, when the second actuation tab is displaced so as to break, initially, the confronting spot region of the rupture line and, subsequently, to separate the pouring panel from said end wall.