Texas constitution
Article 16: general provisions
Section 20

(d) The legislature may enact laws and direct the Alcoholic Beverage Commission or its successor to set policies for all wineries in this state, regardless of whether the winery is located in an area in which the sale of wine has or has not been authorized by local option election, for the manufacturing of wine, including the on-premises selling of wine to the ultimate consumer for consumption on or off the winery premises, the buying of wine from or the selling of wine to any other person authorized under general law to purchase and sell wine in this state, and the dispensing of wine without charge, for tasting purposes, for consumption on the winery premises, and for any purpose to promote the wine industry in this state.