Specifications include, but are not limited to: The contractor shall provide three meals per day, at least two of which will be hot, seven days per week, together with sack lunches of comparable nutritional value, as required by the facility. One of the three daily meals may be a cold meal. No more than 13 hours shall pass between the dinner and breakfast meals. A meal schedule shall be mutually agreed upon between the contractor and City Jail Command personnel. All menus and special diets must meet the standards for adult holding and detention facilities as established by the American Correctional Association. All menus will be approved prior to service, and quarterly thereafter by a registered dietitian. All meals served will provide at least an average of 2800 calories per day in addition to all required nutrients.