market0125_735_cag.JPGThe signage of the alley entrance to The Market. Photo: Carlos Avila Gonzalez/The Chronicle Related Links A guide to The Market, the mega-marketplace now open in the Twitter building Former Betelnut chef Mario Tolentino named culinary director for The Market Is it a genius move or is it a recipe for disaster? Apparently, Mid-Market’s 22,000-square-foot upscale grocery store and dining hub, The Market, which is located in the Twitter Building, is now encouraging customers to drink while they shop. The promotion starts at 8 a.m. every day. The space is already home to a tapas bar that’s frequented by plenty of folks from Twitter and other neighborhood tech firms looking