D.C. Mun. Regs. tit. 22-B, § 3221
3221.1 Each menu, as planned and served, shall be filed and retained for one year.
3221.2 Documentation of the food purchased shall be retained for ninety (90) days.
3221.3 A three (3) day supply of non-perishable staples shall be maintained on the premises.
3221.4 A file of each tested recipe, adjusted to appropriate yield, shall be maintained and used by each employee who prepares food.
3221.5 A two (2) day supply of perishable foods shall be maintained on the premises.
SOURCE: Notice of Final Rulemaking published at 49 DCR 473 (January 18, 2002); as amended by Notice of Final Rulemaking published at 49 DCR 6824 (July 19, 2002).