Fish sauce is one of the major contributors to Phu Quoc’s economy, and the island is a major exporter of fish sauce, locally known as nuoc mam. The sauce is made from anchovies, salt, water and pepper, and the island is home to several fish sauce factories. Some factories offer visitors access inside, providing insightful experiences into fish sauce production on the island. The factories also sell their products to visitors. The Khai Hoan, Phung Hung, and Hung Thanh factories provide visitors with the best experiences.