It's a 9,000 won shake, so it better be good. I have to say, it was worth it. The shake was full of blueberry goodness, the shake was thick- I felt there was some sort of soymilk or ground nuts used to thicken it. It had a bit of blueberry jam (I think) to sweeten and color it. Also, the yogurt in the drink added a nice touch. The drink was not too sweet; it was refreshing.