The banana leaf is the leaf of the banana plant, which may produce up to 40 leaves in a growing cycle. The leaves have a wide range of applications because they are large, flexible, waterproof and decorative. They are used for cooking, wrapping, and food-serving in a wide range of cuisines in tropical and subtropical areas. They are used for decorative and symbolic purposes in numerous Hindu and Buddhist ceremonies. In traditional homebuilding in tropical areas, roofs and fences are made with dry banana-leaf thatch. Bananas and palm leaves were historically the primary writing surfaces in many nations of South and Southeast Asia.
Banana leaves are large, flexible, and waterproof. They impart an aroma to food that is cooked in or served on them; steaming with banana leaves imparts a subtle sweet flavour and aroma to the dish. The leaves are not themselves eaten and are discarded after the contents are consumed.
Besides adding flavour, the leaves keep juices in and protect food from burning, much as foil does. In Tamil Nadu (India) leaves are fully dried and used as packing material for foodstuffs, and are also made into cups to hold liquids. The dried leaves are called 'Vaazhai-ch- charugu' (வாழைச் சருகு) in Tamil. Some South Indian, Filipino and Khmer recipes use banana leaves as a wrapper for frying. The leaves are later removed. In Vietnamese cuisine, banana leaves are used to wrap foods such as cha-lua.
In Indonesian cuisine, banana leaf is employed in cooking methods called pepes and botok; the banana-leaf packets of food are steamed, boiled, or grilled on charcoal. Banana leaves are also used to wrap several kinds of snacks kue (delicacies), such as nagasari or kue pisang and otak-otak, and also to wrap pressed sticky-rice delicacies such as lemper and lontong.
In Java, banana leaf is also used as a shallow conical bowl called "pincuk", usually to serve rujak tumbuk, pecel or satay. The pincuk secured with lidi semat (small thorn-like pins made from the coconut-leaf midrib).