Blank cut for packaging a portion of food

Blank cut for packaging a portion of food (3) comprising fold lines (1a, 1b, 1c) enabling said blank cut to be formed into an envelope (2) in which said portion can be packaged before closing said envelope, said fold lines defining a blank cut having a lower panel (5) intended to form a lower wall of said envelope, said lower panel being extended on either side by respective first and second side flaps (6) each having a side panel (7) intended to form a side wall (2lat1) of said envelope and an upper panel segment (8) which has an edge (8a) connected to said side panel and an opposite edge (8b), said segments being arranged to form together an upper wall (2sup) of the envelope (2) by bringing their opposite edge (8b) together, said blank cut being characterized in that each of said opposite edges (8b) is equipped with an opening tab (9) having a base (9a) extending from said opposite edge, said bases being arranged so as to be associated with one another such that they peel off when the opening tabs (9) are pulled, each of said side flaps having two tear lines (10) which each extend, from one edge of the base (9a) of the tab (9), along the upper panel segment (8) and the side panel (7), the lower panel (5) being devoid of tear line.