Abstract: An automatic high-pressure flash cooker comprising a cylindrically shaped steaming chamber, which is set in a slanted position with its lower end open, and a drain collector which has at its upper end a perforated plate permitting passage of water and is connectable with the open end of the steaming chamber, wherein the steam is supplied to the steaming chamber from the drain collector while the collector is connected with the steam chamber, so as to effect flash cooking of the beans remaining in the steam chamber, with the cooked beans being discharged by releasing the drain collector from the engagement with the steam chamber.