Abstract: The invention relates to a process and a device for preparing a multilayer, especially strand-like, especially thin-layer confectionery product, especially of aerated ice cream with interlayered covering, especially cocoa-glaze layers, on a base bed, which contains at least two layers or beds disposed one above the other, of which at least one layer is injection-molded under pressure from an injection-molding die onto a base bed or onto a lower confectionery layer, especially when confectionery-material-free air chambers are formed at least in sections between two neighboring layers and/or especially when the vertical extent of at least one wavy layer is larger than its thickness, the base bed having, for at least part of the time, a relative velocity with respect to the confectionery material discharge or delivery rate of the injection-molding die, a wavy layer being so formed that its crest lines run substantially in the longitudinal direction of the confectionery product to be prepared.