Otai

ʻOtai is a refreshing Polynesian beverage, typically made with coconut meat, coconut milk, and coconut water. It is most often associated with Tongan cuisine, though similar versions are enjoyed in other Polynesian islands, including Samoa, Niue, Tokelau, Tuvalu, Uvea, and Futuna. History of ʻOtai The drink has its origins in Western Polynesia, where it was traditionally served as a refreshing accompaniment to large meals. European colonists documented the Samoan version of ʻOtai in the late 19th century. The original recipe involved mixing grated ambarella fruit (known as vi in Samoan and Tongan and wi in Hawaiian) with young coconut meat, coconut milk, and coconut water. This mixture was poured into large coconut shells, corked with coconut husk, and chilled in cold water or waterfalls before serving.

Source: Wikipedia