Business and Professions Code § 23396.5

Notwithstanding any other law, any on-sale licensee that maintains a bona fide eating place in conjunction with such license, any on-sale beer and wine public premises licensee, or any winegrower that is exercising a privilege pursuant to Section 23358 or 23390 may allow any person who has purchased and partially consumed a bottle of wine to remove the partially consumed bottle from the premises upon departure.