Wash. Rev. Code § 66.28.150
A domestic brewery, microbrewery, domestic winery, distillery, distributor, certificate of approval holder, or its licensed agent may, without charge, instruct licensees and their employees, or conduct courses of instruction for licensees and their employees, including chefs, on the subject of beer, wine, or spirituous liquor, including but not limited to, the history, nature, values, and characteristics of beer, wine, or spirituous liquor, the use of wine lists, and the methods of presenting, serving, storing, and handling beer, wine, or spirituous liquor, and what wines go well with different types of food. The domestic brewery, microbrewery, domestic winery, distillery, distributor, certificate of approval holder, or its licensed agent may furnish beer, wine, or spirituous liquor and such other equipment, materials, and utensils as may be required for use in connection with the instruction or courses of instruction. The instruction or courses of instruction may be given at the premises of the domestic brewery, microbrewery, domestic winery, distillery, or authorized representative holding a certificate of approval, at the premises of a retail licensee, or elsewhere within the state of Washington.
RCW 66.28.150
Effective date-2004 c 160: See note following RCW 66.04.010.