PROBLEM TO BE SOLVED: To facilitate installation of a camera for evaluating a roasting degree in a roasting process and suppress a failure of the camera.SOLUTION: A roasting object is accommodated inside a drum 2. A heating system 5 heats the roasting object in the drum 2. A first take-out port 2c is installed facing the inside of the drum 2, and sends out the roasting object roasted inside the drum 2 to a succeeding process. A second take-out port 2d is installed facing the inside of the drum 2, and has an opening smaller than that of the first take-out port 2c. A sampling chamber 6a is installed in a stationary state outside the drum 2. The roasting object inside the drum 2 is guided to the sampling chamber 6a through the second take-out port 2d as a sample. A camera 6b photographs the roasting object guided to the inside of the sampling chamber 6a.SELECTED DRAWING: Figure 1
