Teh Tarik (pulled tea) is a hot tea and milk beverage that is commonly served in southeastern Asian countries. The mixture is poured between two vessels from a height, giving it a thick frothy top. This process also helps to cool the tea as well as mixing it and giving it a better flavor. There is an element of showmanship in the preparation of teh tarik, locals as well as tourists gather to watch it being prepared. The tea vendors sometimes gather for competitions in Malaysia.
This particular performer is in the Chatuchak weekend market (also called the J.J. Market) in Bangkok, Thailand. A tourist talked to him and he said this took him 6 years to master.