Bayonet pressure cooker provided with guide elements

The invention provides a cooking utensil for cooking food under pressure having a vessel, a lid, and a bayonet-fitting locking system comprising first and second series of locking projections, said utensil includes a lid subassembly that includes said lid and a support attached in pivotable manner to said lid, said lid subassembly and said vessel being configured to be associated with each other in a first arrangement in which the lid overlies the vessel, and a second arrangement obtained by moving said lid subassembly downwards until said first series of projections are lower than said second series of projections, said support and said vessel being provided respectively with complementary first and second guide elements that are configured to co-operate mutually whenever said lid subassembly and said vessel are associated with each other in said first arrangement.