Nothing really special. I don't know why our Kiwi friends rave about this place. The normal beef burgers are pretty average and I found mine very dry even when cooked medium. If you want something different and in my opinion better then try the buffalo burger, it was far more flavoursome. GBK is pricey and average to be honest, it just looks and feels like an expensive burger bar. It's saving grace (for this particular restaurant anyway) is that it is better than Pizza Hut and Burger King which are just round the corner.