Photo: Doaa Elkady • Food Styling: Thu Buser Yellow soybean paste (huang dou jiang) and sweet flour paste (tian mian jiang) are crucial to the flavors of zha jiang mian, one of Beijing’s most famous noodle dishes.

Photo: Doaa Elkady • Food Styling: Thu Buser Yellow soybean paste (huang dou jiang) and sweet flour paste (tian mian jiang) are crucial to the flavors of zha jiang mian, one of Beijing’s most famous noodle dishes.