East Side Banh Mi (Nashville, Tenn.) • Gastro Grind Burgers (Palm Desert, Calif.) • The Real Italian Deli (Palm Desert, Calif.) On this trip, Guy's unhingin' his jaw for off-the-hook sandwiches and out-of-bounds burgers. in Nashville, a Vietnamese spot makin' a bomb bánh mì and mind-blowin' steak and rice bowls. In the Cali desert, a husband-wife joint grindin' all their own meats for standard, deluxe, and outrageous hoity-toity fancy-pants burgers. And stayin' in Palm Desert, a market-deli pilin' up Italian porchetta on scratch-made focaccia.