Process for preparing a cornet consisting of a substantially conical wafer (22) prior to the filling of said cornet with an ice-cream; in order to preserve the crunchy nature of the wafer, the inner wall of the cornet is sprayed with liquid chocolate (23); this chocolate solidifies rapidly in order to form a coating layer for separating the wafer and the ice-cream. The process is characterized in that the inside of the cornet is sprayed with an excess quantity of chocolate to guarantee that no coating-gap zone remains on the inner wall of the wafer, the excess liquid chocolate collecting, under gravity, at the bottom tip of the corner; prior to solidification of said excess, the excess is sucked out of the cornet, subsequent solidification of the coating layer thus making it possible to establish a continuous barrier over the inner wall of the wafer.