A microwave pressure cooker comprising: (a) an open top container; (b) a cover with a gasket adapted for ledge interlock type sealing and locking lug engagement with the container to form an enclosure for pressure cooking within the container; (c) first and a second regulator opening means (5b with 5a and 10) forming valve openings in the cover; (d) primary deformable diaphragm type pressure regulator means comprising slits formed therein, the primary deformable diaphragm type pressure regulator means being adapted for disposal on the first regulator opening means (5b with 5a), and is arranged to be responsive to pressure in the enclosure; (e) secondary deformable pressure indicator cum regulator means (13a, 13b, 19a and 19b) adapted for disposal on the second regulator opening means formed on the cover and which is responsive to pressure in the enclosure; (f) a push rod type gasket offset device means mounted on the locking lug and an opening/closing aid (4") of the cover for releasably maintaining the container and the cover in a sealing engagement responsive to disposition of gasket on the cover and the movement of the gasketed cover relative to the container to a lock position; (g) a removable filter adapted to be disposed on the first regulator opening means wherein the first regulator opening means comprises an open annular cylindrical length of enclosed receptacle body, formed underneath the cover, arranged for collecting a predetermined volume of discharge vapour, and being formed integral with the cover; the receptacle body comprising a generally circular opening or a cutout on its bottom side arranged to allow removal of the primary diaphragm type pressure regulator means, to form an open cavity arrangement; and wherein the first regulator opening means, which is a receptacle type regulator opening means (5b with 5a), comprises an opening regulator means disposed with the filter, and wherein the filter comprises a perforated material arranged to cover the circular opening on the exterior bottom side of the receptacle body; and wherein the filter comprises a flat circular shaped plate, formed of perforated material, the plate being arranged with two diametrically opposed pins (25, 26), and the pins being perpendicularly aligned with respect to the plate; and each of the pins is affixed to the edge of the flat plate and adapted to fit at its free end into corresponding holes (28 & 27) on the bottom surface of the regulator opening means, so as to anchor the filter to the cover; wherein each hole is provided with a grommet (32, 33) arranged to generate an airtight seal for holding the pins (25,26), and respectively the plate in place to prevent the escape of pressurised gas from within the enclosure through the holes. (a) an open top container; (b) a cover with a gasket adapted for ledge interlock type sealing and locking lug engagement with the container to form an enclosure for pressure cooking within the container; (c) first and a second regulator opening means (5b with 5a and 10) forming valve openings in the cover; (d) primary deformable diaphragm type pressure regulator means comprising slits formed therein, the primary deformable diaphragm type pressure regulator means being adapted for disposal on the first regulator opening means (5b with 5a), and is arranged to be responsive to pressure in the enclosure; (e) secondary deformable pressure indicator cum regulator means (13a, 13b, 19a and 19b) adapted for disposal on the second regulator opening means formed on the cover and which is responsive to pressure in the enclosure; (f) a push rod type gasket offset device means mounted on the locking lug and an opening/closing aid (4") of the cover for releasably maintaining the container and the cover in a sealing engagement responsive to disposition of gasket on the cover and the movement of the gasketed cover relative to the container to a lock position; (g) a removable filter adapted to be disposed on the first regulator opening means