Best scallion pancake in Taipei

When you are in Taipei, you need to seek out scallion pancakes no matter where you are.  Chances are, they are good. But if you are adventurous and are a foodie, then you need to make a track to 永康街 Yongkang Street.  This stand is at the corner of a building, on the first floor of a Vietnamese restaurant. And there is always a line.  I was there at 11 pm last night, and there was a line!  On a Wednesday night!  No wonder I am always so bored in the suburbs...