My family and I will be all over Philadelphia for a week and we will need to stop and eat at some point. We range from the non-adventurous (mom) to adventurous (me) and we span 18 - 50 years old. Ethnic food is probably out (by ethnic, i mean stuff like Thai and Indian, not the relatively "safe" ethnic foods like Mexican and iIalian.) Also, we're not drinkers so places that aren't necessary. We like hole in the walls and off the beaten path stuff, so feel free to recommend non-touristy spots. Any help would be awesome. I've already gotten some great ideas from just reading this board, but I welcome any other must-eats comments.