Not the cheapest Mexican in Itaewon, in fact it's probably the most expensive, but the food tastes just the same as it does back in the states. With chain restaurants you always know what you are going to get and that's why people like them. The restaurant is huge and has a good atmosphere the drinks in particular are good and worth going for alone.
To read more see http://www.afatgirlsfoodguide.com/2014/03/26/on-the-border-part-dos/