I understand more later that they have other foods which are their selling point such as Yong Tau Foo, braised pork knuckles, chicken leg and many more (cannot remember that much). In my opinion, if you can't even get your signature dish right, I do not think the side dishes will be that impressive either.
Their services are even worse. They are pretty arrogant as if their food are the best in the world. I hate a person not looking at you when he/she is talking.