N.J. Stat. § 33:1-12.23

The holder of a plenary retail consumption license or a seasonal retail consumption license, after the effective date of this act, may sell and display for sale alcoholic beverages in original containers for consumption off the licensed premises only in the public barroom of the licensed premises, such barroom being a room containing a public bar, counter or similar piece of equipment designed for and used to facilitate the sale and dispensing of alcoholic beverages by the glass or other open receptacle for consumption on the licensed premises; provided, however, that where, prior to the effective date of this act, alcoholic beverages in original containers for off-premises consumption were sold and displayed for sale by the holder of such license, either to the exclusion of sale for consumption on the licensed premises or upon a portion of the licensed premises other than the public barroom, such sale and display shall be permitted as heretofore and notwithstanding renewal or transfer of the license either from person to person or place to place, subject to rules and regulations to be promulgated by the commissioner. L.1948, c. 98, p. 552, s. 1, eff. May 28, 1948.