The preparation of "pulled tea" (Teh tarik)

This man demonstrates a technique used in Malaysia.

The mixture is poured back and forth repeatedly between two vessels from a height, giving it a thick frothy top. This process cools the tea to drinking temperatures, and helps to thoroughly mix the tea with the condensed milk. It is also done to give the tea a better flavour...

Found at Anything and Everything, via Neatorama.