This is my favorite burger from Mos Burger (www.mos.co.jp). The only problem is, every time I go to Mos Burger I get seriously pissed off with the servers there and frustrated with the "rules". This burger, for example, cannot be taken togo - why? I have no idea. Some of the bigger and smaller burgers can be taken togo - but, not this one. They have some strange rules here, but if you can struggle your way past them, the burgers are great.