Dong Er is a traditional Chinese dish originating from the northeastern region of China. It is made primarily from fermented soybeans, which are ground into a paste and then mixed with various seasonings. The dish is often served as a condiment or side dish, adding a rich, savory flavor to meals. Typically enjoyed with rice or noodles, Dong Er can also be used in stir-fries and soups. Its unique taste and texture make it a popular choice among those who appreciate fermented foods. The dish reflects the culinary traditions of Northeast China, showcasing the region's emphasis on bold flavors.