The Chestnut Street upscale comfort food explosion continues apace. 707 opened this past Friday, with a menu of high-end takes on American classics. What do we mean? Well, the appetizer menu includes “reuben spring rolls” and pepper and shallot-stuffed mozzarella pinwheels alongside a cheese plate and fried green tomatoes for starters. Several items look interesting—we’re looking forward to trying the “brick sandwich” (a cubano made with manchego cheese and poblano peppers) and the barbecue brisket tostadas. Entree prices are in the $15-$20 range, but a meal can be made out of sandwiches or small plates for significantly less. A full bar is offered as well.