Between 1895 and 1908, Britain's prison administration introduced reforms aimed at 'reclaiming' male adolescent offenders. These included a significant rethinking of the dietary. Drawing on the sciences of nutrition and of adolescent development, the prison experimented with the rations for juvenile-adults, a new category of inmate defined by age and by gender. For the first time, the state explicitly used prison rations in the service of sovereignty: it sought to fashion working-class male adolescents into well-developed specimens of British manhood able to contribute to the increasingly democratic polity and to defend and populate the nation and its empire.In his 1958 memoir Borstal Boy, Irish playwright Brendan Behan recounted his incarceration in England after being arrested at sixteen years of age for involvement with the Irish Republican Army. Transferred out of a men's prison after sentencing to an allocation centre for 'juvenile-adults' bound for borstals -separate prisons for those aged sixteen to twenty-one years -Behan vividly recalled the meal he was provided at intake. We were given 'bloody great plates of stew', he maintained, the portions so large he was unable to manage a second helping. For breakfast, there was 'any amount of bread', three mugs of tea per person and a 'big bloody rissole'. 1 The ample meals Behan consumed during his 1939-1941 incarceration were central to the borstal regimen, which had been developed at the turn of the century to rehabilitate the morals, minds and bodies of young offenders. Although Behan was eventually deported back to Ireland, most of the 'Borstal Boys' he served his sentence alongside were targeted for specialised treatment, including an improved diet, precisely because their age and gender rendered them resources for the nation: as adolescent males, they were on the brink of becoming full British citizens.The borstal was officially added to Britain's 'carceral archipelago' in 1908 but its roots lie in shifts in policies and practices that began in 1895. These stressed the importance of nurture as opposed to nature, rejecting contemporary trends in eugenics and