摘要：We aimed to determine the appropriate way of arranging rice in a bowl for the purpose of teaching how rice should be served. To determine the three-dimensional arrangement of rice in a bowl, we attempted to measure the height of rice in a bowl using a depth sensor defined as “Nakataka-do”, which is an index of the particular arrangement of rice in a bowl, where the center is higher than the edge. In addition to this, we defined “Tobidashi-do” as the degree of roughness of the contour of the rice. The weight and shape index of 29 rice samples were measured by 21 undergraduate students and 8 cooking teachers to determine the arrangement of rice in a bowl. The results of the analyses are as follows: The “Tobidashi-do” of the students’ samples were higher than those of the teachers. The range of “Nakataka-do” of 100～120 g rice samples showed a wide distribution. It was suggested that an appropriate arrangement of 100～120 g rice samples in a bowl is possible by being aware of “Nakataka-do.” Cluster analysis showed three distinct sample arrangements. On the basis of these results, we demonstrated the appropriate arrangement of rice in a bowl.
