Cooking utensil for working dough which comprises a rotating part whose periphery is adapted to be equipped with an elongated part made of flexible material having reliefs (30, 31), these reliefs being used to cut and/or mark a dough before cooking when the rotating part is rolled on this dough, characterised in that said rotating part is a roller and in that this roller comprises: - at least one plate made of an elastically flexible material, comprising said reliefs (30, 31) formed thereon; the plate is adapted to be elastically deformed so as to be able to adopt a wound shape in which two opposite edges of the plate are placed against each other; each of these two opposite edges comprises first circumferential connecting means and first radial connecting means (35, 36; 37); and - a cylindrical or substantially cylindrical roller body, comprising second circumferential connecting means adapted to engage, releasably, with said first circumferential connecting means to circumferentially connect said opposite edges to said body, and second radial connecting means (25; 21) adapted to engage, releasably, with said first radial connecting means (35, 36; 37) to radially connect said opposite edges to said body; - each plate is provided, on each of said edges and along these edges, with ribs having a flank forming said first circumferential connecting means, - said body is provided with a longitudinal groove, formed radially towards the inside of this body and laterally delimited by walls of this body, these walls forming said second circumferential connecting means, and - the groove is dimensioned so as to receive, with a tight fit, said ribs against each other; the dimension of the plate along a direction perpendicular to said opposite edges corresponds to the circumference of said body such that, when the plate is wound on this body and said respective connecting means (16, 25, 35, 36; 21, 37) are engaged, said opposite edges are held on said body by being near each other and thus forming a continuous circumferential surface. characterised in that said rotating part is a roller and in that this roller comprises: - at least one plate made of an elastically flexible material, comprising said reliefs (30, 31) formed thereon; the plate is adapted to be elastically deformed so as to be able to adopt a wound shape in which two opposite edges of the plate are placed against each other; each of these two opposite edges comprises first circumferential connecting means and first radial connecting means (35, 36; 37); and - a cylindrical or substantially cylindrical roller body, comprising second circumferential connecting means adapted to engage, releasably, with said first circumferential connecting means to circumferentially connect said opposite edges to said body, and second radial connecting means (25; 21) adapted to engage, releasably, with said first radial connecting means (35, 36; 37) to radially connect said opposite edges to said body; - each plate is provided, on each of said edges and along these edges, with ribs having a flank forming said first circumferential connecting means, - said body is provided with a longitudinal groove, formed radially towards the inside of this body and laterally delimited by walls of this body, these walls forming said second circumferential connecting means, and - the groove is dimensioned so as to receive, with a tight fit, said ribs against each other; - at least one plate made of an elastically flexible material, comprising said reliefs (30, 31) formed thereon; the plate is adapted to be elastically deformed so as to be able to adopt a wound shape in which two opposite edges of the plate are placed against each other; each of these two opposite edges comprises first circumferential connecting means and first radial connecting means (35, 36; 37); and - a cylindrical or substantially cylindrical roller body, comprising second circumferential connecting means adapted to engage, releasably, with said first circumferential connecting means to circumferentially connect said opposite edges to said body, and second radial connecting means (25; 21) adapted to engage, releasably, with said first radial connecting means (35, 36; 37) to radially connect said opposite edges to said body; - each plate is provided, on each of said edges and along these edges, with ribs having a flank forming said first circumferential connecting means, - said body is provided with a longitudinal groove, formed radially towards the inside of this body and laterally delimited by walls of this body, these walls forming said second circumferential connecting means, and - the groove is dimensioned so as to receive, with a tight fit, said ribs against each other; the dimension of the plate along a direction perpendicular to said opposite edges corresponds to the circumference of said body such that, when the plate is wound on this body and said respective connecting means (16, 25, 35, 36; 21, 37) are engaged, said opposite edges are held on said body by being near each other and thus forming a continuous circumferential surface.