Don't expect your classic meat-heavy Philly hoagie here. This popular food truck is whipping up some must-try vegetarian and vegan eats, like tofu meatball subs and noodles. All you have to do is look for the red umbrella -- and the long lunchtime lines -- when you're in the area. Some other top choices at KFH? Consider going for the bánh mì bì chay (a twist on the traditional bánh mì with mock pork made from tofu, yams, and mung bean noodles) or the spicy ramen.