A signature dish in northern celebrations, this slow-cooked pork stands out for its rich flavor and labor-intensive preparation.

The dish "rau sau sau" (Liquidambar formosana) is favored by Lang Son’s residents for its affordable price and numerous health benefits.

Unlike traditional pho served with hot broth, Pho chua (sour pho), a common dish in northern mountainous provinces such as Ha Giang, Cao Bang and Lang Son, lacks broth and is prepared differently from traditional pho.