What is the fine-grained topic of the following text: For those East Enders who do some of their provisioning west of the Shinnecock Canal, Russ & Daughters offers an array of American caviars, including mild California-raised Caspian-style sturgeon caviar, wild Alaskan salmon roe, and even Caribbean flying fish roe with wasabi (of the Super Heeb sandwich fame). Only return the topic.
American caviars at Russ & Daughters