||This article relies largely or entirely upon a single source. (February 2013)
Hoisin sauce is a Chinese dipping sauce. The word hoisin is a Romanization of the Chinese word for seafood (海鮮) as pronounced in Cantonese.
Peking-style hoisin sauce ingredients include starches such as sweet potato, wheat or rice, and water, sugar, soybeans, sesame seeds, white distilled vinegar, salt, garlic, red chili peppers, and sometimes preservatives or coloring agents. Traditionally, hoisin sauce is made using toasted mashed soy beans. Despite the literal meaning, hoisin sauce does not contain seafood, nor is it typically used with it. Neither does it contain plums, even though it is frequently misidentified as plum sauce
A number of Chinese cuisine dishes such as spring rolls, mu shu pork, popiah, Peking duck and barbecued pork use the sauce. It is especially common in Cantonese cuisine flavoring.
Hoisin sauce is also a popular condiment for phở, a Vietnamese noodle soup; the sauce can be directly added into a bowl of phở by the diner, or can be used as a side dip for the meat of phở dishes. In such cases, hoisin is typically accompanied by Sriracha sauce. The sauce is also used for glazing broiled chicken.