Hoisin is a thick, dark sauce commonly used in Chinese cuisine. It is made from fermented soybeans, sugar, vinegar, garlic, and various spices, giving it a sweet and savory flavor. Hoisin is often used as a dipping sauce, marinade, or glaze for meats and vegetables. This versatile sauce is a key ingredient in dishes like Peking duck and moo shu pork. It can also be used to enhance stir-fries, noodle dishes, and even as a condiment for spring rolls. Its unique taste adds depth and richness to many Asian recipes.