Drinkers, foodies and do-gooders unite seasonally for a walk-around tasting event at the historic Ferry Building in support of the Center for Urban Education about Sustainable Agriculture (CUESA). The stars of this winter’s fete are our four-legged friends — in addition to three full-sized cocktail creations, unlimited samples and vegetarian hors d'oeuvres, the SFSPCA will be hosting a doggy petting zone.