A package has a base for holding foodstuff objects, a cover fittable downwardly over the lid and having a rim with a rear edge and a front edge parallel thereto, and a hinge interconnecting the cover and base at the rear edge for movement between an open position with the rims separated at the front edge and a closed position with the rims engaging each other at the front edge. A female formation open vertically at one of the rims toward the other of the rims has a recess with a rear side formed by a forwardly projecting counterhook and a front side defined by a flank extending vertically forward and toward the other rim. A male formation projecting vertically from the other of the rims toward the one rim is fittable into the recess and has a hook matable with the counterhook.