Water chestnut is an aquatic plant with significant nutritional and cultural value. Its edible fruits and seeds are rich in essential nutrients, making them a valuable component of traditional diets. This abstract highlights the nutritional benefits, processing and marketing, traditional application as well as potential application in water chestnut. The plant’s adaptability to aquatic environments and its role in maintaining ecological balance are also highlighted. With its rich nutrient profile and versatility, water chestnut offers opportunities for sustainable food systems and nutritional security. This aquatic treasure can contribute to diverse and resilient food cultures, particularly in regions where it is traditionally consumed.