… was these tetra-paks of Soju.
One of my friends had advised to get a few of them at Incheon Airport, but due to almost missing our flight, we had no chance to look around.
When I told one of my Korean students in Germany how I regretted not having been able to get a couple, she immediately promised to share some of her supply. This seems to be a popular souvenir to bring back from Korea, also known as Korean Jet Fuel.
They look like little juice packs, with an opening to insert a straw, and are popular take-out drinks for attending sports games.
More information about Soju on facebook.