Chef Antonio Padilla, best known as the formidable sous chef of Bacanora and Huarachis, feels nostalgic as he puts a hand torch to a stack of mesquite. It’s a mild, overcast Saturday at Goldwater Brewery in Old Town Scottsdale, where Padilla’s new pop-up, Alita, is just setting up for the brewery’s Beer Fest. As the wood catches and the scent of campfire carries through the crowd, things start to heat up.