A prison has revamped its meals due to a significant proportion of foreign inmates. One in four inmates is foreign, prompting the change. The prison's meal system has been updated to accommodate this diversity.
Further details about the revamp and the prison's new meal system are available from the source. The source publication, News On Japan, has reported on the prison's efforts to adapt to its changing inmate population.
More information can be found through News On Japan, which has covered the story of the prison's meal revamp and its foreign inmate population.