The object of the present invention is a process forcooking food of vegetable origin, in particular legumesand cereals.In particular, the present invention relates to aprocess for cooking food of vegetable origin,particularly legumes or cereals, which comprises thefollowing steps:a) rehydration of the legume or cereal in the driedform in water for a specific timeb) rinsing and dripping of the rehydrated legume orcerealc) packaging and sealing at reduced pressure or in aprotective atmosphere in autoclavable flexible packagesof the rehydrated and drained legume or cereald) cooking of the legume or cereal packaged undercontrolled temperature and pressure conditions.