Oyster sauce - an Asian kitchen essential

Oyster sauce is a thick dark brown sauce made from oyster extract, soy sauce, sugar, and starch. Originating in China's Guangdong province, this sauce is now an essential part of Asian cuisine. Its rich umami flavor has a slightly sweet and salty undertone. Most commonly added to wok stir-fries, meat marinades, vegetable medleys, and noodle dishes, it gives food depth of flavor and an appealing dark color. Vegetarian versions made from mushrooms are also available.