Established in 2005, Oriental Garden is a venerated Chinatown institution that specializes in Cantonese cuisine, fresh seafood, and dim sum. When a bare-bones Chinatown restaurant gets regular visits from chefs like David Bouley, you know it's doing something right. Certain seafood dishes, however, shine like few others in Chinatown. Subtle black bean sauce sets off the brininess of fresh, chewy clams. Plump oysters sizzle in a clay pot along with shitakes and scallions in a savory pool.