Nineteenth-century psychiatrists ascribed to a model of health that was predicated on the existence of objective and strictly defined laws of nature. The allegedly "natural" rules governing the production of consumption of food, however, were structured by a set of distinctively bourgeois moral values that demonized over-indulgence and intemperance, encouraged self-discipline and productivity, and treated gentility as an index of social worth. Accordingly, the asylum acted not only as a therapeutic instrument but also as a moral machine that was designed to remake lazy, indolent transgressors into useful, "decorous" citizens. Because the theory and mechanics underlying this machine seemed straightforward and self-evident to psychiatrists, they were confounded when the asylum failed to translate its ideals into reality. While psychiatrists tended to blame this failure on the intractable immorality and weakness of individual patients, particularly paupers and immigrants, a review of the various meanings and uses of food in the hospital reveals the fault lines that ran through the asylum's ideological structure.