There is a lot of goodness to be found on the menu at Yunnan Kitchen, the excellent new small-plate restaurant focused on the cuisine emanating from China’s Yunnan province. The one dish you’re going to have trouble sharing: the fried potato balls, which are, in taste and appearance, like a perfectly executed croquette, but with the addition of far-flung spices and a soy vinegar dipping sauce. A piece of advice: get two orders.