Deer Kewra Water. Kewra is screwpine essence and is used to prepare rice dishes and desserts. Kewra water is an extract that is distilled from pandanus flowers. It is a transparent liquid, almost similar to rose water. It a fragrant food flavoring that may be used in any number of ways. Due to its wonderful fragrance, it is popularly used to flavor rice dishes, desserts as well as meat dishes and barbecues.