Kamini Nagandran Nagandran1, Chua Kien Hui3, Nor Hamdan Md ...

EBN known as Yan Wo by the Chinese community is asignificant cuisine and pharmacy item of the Emperors ofChina during 16 th century. Until now it is considered tobe the most precious food items.Is a dried glutinous secretion of salivary glands fromSouthern Asia swiftlets. The saliva acts as the nestcement is produced by a pair of sublingual glandslocated beneath the tongue of the swiftlets.There are mainly 2 types of nest available-House Nest- Cave nest