炸酱面

The word zhajiangmian (炸酱面) compresses three characters into one dish: 炸 (zhá) means to fry in oil; 酱 (jiàng) is fermented paste or sauce; 面 (miàn) is noodles. The sauce is made by slowly frying ground pork with 黄酱 (huáng jiàng, yellow soybean paste) until the fat separates and the paste darkens to a deep brown. The noodles arrive cold or at room temperature, the sauce mounded on top, surrounded by shredded cucumber, radish, bean sprouts, and edamame. You mix it yourself, and the ratio is your responsibility.

Zhajiangmian became fixed as a Beijing dish during the Qing dynasty (1644–1912), when the capital's population was large enough to support specialized noodle shops. The paste it uses, 黄酱, is a fermented preparation of wheat and soybeans that has been produced in northern China for more than two thousand years. The technique of frying the paste in lard before adding meat deepens its flavor through a process Western food science named the Maillard reaction only in the twentieth century, though northern Chinese cooks applied it long before the name existed.

Korean immigrants in northeastern China encountered zhajiangmian in the late nineteenth and early twentieth centuries and brought the sauce-on-noodles structure back to Korea, where it transformed into jajangmyeon (자장면). The Korean version uses 춘장 (chunjang), a black bean paste, and typically replaces the shredded vegetable garnishes with diced onion and potato. By the mid-twentieth century jajangmyeon had embedded itself so deeply in Korean food culture that it has its own unofficial national day: April 14, called Black Day, when single people eat it communally.

In Beijing today, zhajiangmian is eaten fast, standing or seated at narrow counters, in small restaurants that open before seven in the morning. The dish is breakfast as naturally as it is lunch. The food writer Wang Shixiang, writing in the 1940s and 1950s, described the specific ratio of sauce to noodle as something an experienced Beijing diner could calibrate by eye without measurement. That calibration is still passed down without a written recipe.