My company went out as a group a couple of Fridays ago. We ate pigs knuckles and of course had some soju. However, my wild and crazy team leader heard that I liked to drink beer mixed with soju (somac), so she decided to make me a soju cocktail. She first filled up a shot glass with cola about 3/4 full. She put that in the beer glass, shot glass and all. Then on top she filled another shot glass with soju and stacked that on top of the cola shot glass. Then she filled up the tall glass with beer to make a poktanju cocktail. Bottoms up!