Call it Gold’s Midas touch. The new documentary City of Gold could be a full-length film packed only with restaurateurs sharing the story of how LA Times restaurant critic Jonathan Gold saved their struggling business. Whether the subject is a single mother from Ethiopia at risk of closing who now races to make enough doro watt to feed Gold’s rabid readers or three Oaxaca-born siblings prepping long-uncool cricket tacos for Gold, his dinner companion Ruth Reichl and the 300 seats of diners angling for their taste, the Los Angeles food community clearly appreciates Gold’s dogged determination to find, research and evocatively describe the many cuisines, carts and far-flung restaurants of the sprawling city.