A container (100) within which a food product is to be processed. The container (100) includes: a hollow body (101) providing an interior chamber (110) to receive the product and within which the product is processed, the body (101) having a rim portion (104) surrounding a body top opening (106); a removable lid (107) sealingly associated with the rim portion (104) to close the top opening (106), the lid (107) having: a base (111) sealingly associated with the rim portion (104), the base (111) having a base opening (115) providing access to the chamber (110) and a sealing surface (157) surrounding the base opening (115), a removable valve assembly (112) located in the base opening (115) and sealingly associated with the base (111) to close the base opening (115), the valve assembly (112) including: a main part (122) associated with the base (111) to removably secure the valve assembly (112) in the base opening (115), a seal (123) mounted on the main part (122) and engaging the sealing surface (157), an air opening (131) in the main part (122) providing for air flow from the chamber (110) to exterior of the container (100), a valve (132) operatively associated with the air opening (131) to close the air opening (131) to at least inhibit air flow from exterior of the container (100) to said chamber (110) but permit air flow from the chamber (110) to the exterior, and wherein a cavity (156) is provided between the base (111) and main part (122), leading to said seal (123), with the cavity (156) including a first cavity portion (151) and a second cavity portion (153), with the first cavity portion (151) being configured relative to the second cavity portion (153) to at least partly dissipate kinetic energy of liquid being propelled from the interior (110) into the cavity (156).