Abstract: A means provided for exhausting vapors from a cooker for steam cooking rice and/or other foodstuffs contained in a cooking pot wherein the water in the cooker is heated by a heater provided within the main body of the cooker. The means includes a cylindrical member which forms a hole in an inner lid of the cooking pot, which hole communicates with the interior of the cooking pot, an annular wall around said cylindrical member, an annular vapor guide member suspended from the outer lid down between said cylindrical member and annular wall, back flow holes provided in the inner lid at the place inside the guide member, and exhaust openings provided outside the outer lid. The means not only collectively exhausts the vapors to be generated during cooking from the exhaust openings but also prevents liquid from the rice being boiled over.