Gird your belt buckles. SF Chefs is coming this month. The city's largest food, wine and spirits event, SF Chefs takes over the city (and most certainly Union Square) for a weeklong party of eating, drinking, dancing and cozying up to your favorite chefs. Have mercy. This year's events range from a dinner on the modern American picnic to an Epic Roasthouse pig roast to a clandestine Q&A with the San Francisco Chronicle's famous food writer Michael Bauer.