Sesban-River Beans often grow in marshy areas and rice fields. This plant is a bushy type, with round, shiny stems, green with purple stripes, branching out into many stems, feather-like leaves, and usually bloom during the flooding season. Sesban-River Beans typically have yellow flowers that grow in clusters, with each cluster containing 8 to 10 large flowers. When eaten, Sesban-River Beans are crunchy, with a sweet, bitter, and slightly astringent taste. Sesban-River Beans are a familiar ingredient in many rustic dishes of the people in the river region, as they are easy to incorporate into various dishes, whether raw or cooked, and are especially suitable for dipping in hotpots. Therefore, Sesban-River Beans are often used to prepare salads, sour soups, stir-fries... Especially, vermicelli with fish soup served with Sesban-River Beans is a very popular and delicious dish.

The soup is made with snakehead fish. After cleaning the fish and removing the fishy smell with white wine and ginger, use the bones and fish head to make the broth. This process results in a fish broth with a sweet and clear taste. The remaining fish meat is sliced into bite-sized pieces and boiled until cooked. Depending on the region, the fish meat can be left as is or marinated and quickly stir-fried with fresh turmeric to achieve a beautiful, shiny yellow color. In addition to the sliced fish meat, there are also fish cakes, which can vary from long fish cakes, fish ball cakes, to sliced fish cakes...

Sesban-River Beans are an essential accompaniment to vermicelli fish soup. Typically, due to their fast cooking nature, Sesban-River Beans are only added when the vermicelli fish soup is already served. At this point, the vermicelli fish soup has a sweet and clear taste from the fish, the crispy texture, slight bitterness, and astringency of the Sesban-River Beans, combined with the distinctive aroma of laksa leaves, lemongrass, and the strong spiciness of chili, create a multi-layered taste experience for diners. In addition to Sesban-River Beans, accompanying vegetables include water spinach and bean sprouts, enhancing the overall flavor of the dish.

According to traditional medicine, Sesban-River Beans are believed to have cooling, detoxifying, and calming effects. Nowadays, many diners are inclined toward healthy eating, and many eateries in Can Tho serve brown rice vermicelli fish soup, making this dish even more diverse.