Oyster sauce

Oyster sauce is a thick, brown sauce made from oysters, brine, sugar and soy sauce. It’s used to flavor all kinds of Chinese dishes and can be used as an ingredient in dipping sauces.
Chinese Food Cooking and Chinese Restaurant Review

Oyster sauce is a thick, brown sauce made from oysters, brine, sugar and soy sauce. It’s used to flavor all kinds of Chinese dishes and can be used as an ingredient in dipping sauces.