Exhaust tunnel working with the steam boiler, the machine is used in processed and packed olive pasteurization. Olive is pasteurized by brine, filling, pre-heating, baking and cooling processes in the exhaust tunnel. Cooling process is performed by the cooling basin placed at the end of the exhaust tunnel. Conveyor belt speed of the exhaust tunnel can be adjusted by electronic speed control system ungradually. Exhaust tunnel may be manufactured in the desired size and width upon request. The exhaust tunnel is made of stainless steel completely.