This is going to sound like a product placement, but I pretty much adore Kanu (카누). It's pretty much like Starbucks Via. Unlike most Korean instant coffees, you can buy it black. And it dissolves in cold water. AKA instant iced americanos for one tenth the price with a pretty decent quality- the ten pack costs about 3900 won. Of course, it doesn't compare with the coffee you can get at a real coffee shop, but it has been saving me three dollars a day. ^^ Their website is really well done, and stars Gong Yoo of The First Shop of Coffee Prince fame. I need to stop endorsing this coffee unless I start getting a commission . . .