Yiliang Roast Duck

Folk tradition traces Yiliang duck to the early Ming, when the general Fu Youde marched south to pacify Yunnan and is said to have brought along a Nanjing cook nicknamed 「李烧鸭」 who settled near Yiliang — but this is legend, and the earliest documented history of roast duck in the county dates only to the late Qing. The reliable lineage runs through the town of Goujie. In the twenty-seventh year of the Guangxu reign (1901), a Goujie juren named Xu Shi (许实, courtesy name 秋田) of Shenwuying village travelled to Beijing for the metropolitan examination; his book-attendant Liu Wen (刘文), of Xixi village, lodged beside a Beijing roast-duck shop and, with time on his hands, learned the whole trade there. Liu carried the method home and opened a duck shop, 质彬园, by the Goujie railway station. He adapted the Beijing technique to local materials: reed stalks in place of the sorghum stalk used to plug the duck, honey in place of maltose for the glaze, and a clay 焖炉 fired with pine needles to roast the small local 麻鸭. From Goujie the craft spread through Yiliang and on to Kunming, and it was inscribed on Yunnan's second provincial intangible-cultural-heritage list in 2009. The exact founding date of the trade is otherwise unrecorded.

A good Yiliang duck arrives a glossy jujube-red, the skin so thin and crisp it cracks under the cleaver; a first bite is all shattering skin and the faint sweet smoke of pine and honey, then the fat gives way to white meat that is moist and tender and pulls cleanly off the bone. The flavor is gently sweet and clean rather than heavily seasoned, the smoke kept light. Dipped in sweet bean sauce it turns rounder and sweeter, in pepper-salt sharper and savory; a scrap of raw scallion or a reed-scented pancake cuts the richness. Done badly, the skin goes leathery or scorched and bitter where the heat ran too hard, or it steams flabby and pale because the oven cooled, and the meat dries out stringy instead of staying juicy.

Yiliang duck is roasted in a sealed clay 焖炉 (closed oven), and its character comes from indirect heat. Bundles of pine needles are burned down to embers first and the flame is let die, so the duck never meets an open fire; hung inside behind a shut door, it cooks by the radiant heat thrown off the glowing charcoal and the heat stored in the thick earthen walls. This even, enclosing heat is what leaves the meat white, moist and tender, and it is mechanically the opposite of Beijing's 挂炉, where the duck is roasted over a live fruitwood fire and constantly turned and flamed. Before roasting the bird is inflated through a hole under the wing so the skin lifts off the fat, then it is glazed with honey and basted with lard. As the duck roasts the skin dries and its sugars and proteins brown through the Maillard reaction and caramelization into the crisp, deep jujube-red shell, while the layer of subcutaneous fat renders out and bastes the meat from within. Honey browns faster and at a lower temperature than the maltose of the north, helping the color set; the pine-needle smoke perfumes the skin, and a drip tray below catches falling fat so it cannot fall on the embers, flare up and foul the duck with black, acrid smoke.