Abstract: This invention relates to a process for manufacturing a product based on egg in the hard-boiled state, constituted by a plurality of superposed, fast-joined layers, one layer of white alternating with a layer of yolk, of rectangular section. The process consists in the following steps: (a) supplying fresh runny egg white in n.sub.1 moulds, and fresh runny egg yolk in n.sub.2 moulds, the sum n.sub.1 +n.sub.2 being at least equal to two and n.sub.1 being equal to n.sub.2 or different from n.sub.2 by one unit; (b) pre-cooking each runny liquid up to coagulation; (c) removing from moulds; (d) superposing the coagulated layers, a layer of yolk being adjacent a layer of white; (e) cooking the superposed layers, under slight pressure, up to hardening. The finished product is preferably in the form of a cube and is used as aperitive snack.