A midtown dive that’s been serving its famous French ground steak burger since 1969, Nationwide Freezer Meats is in a cavernous ramshackle and shabby space, with garish blue booths, mismatched tables and a cheap, red-wine-colored carpet, although the Coca-Cola signs and old Hollywood posters lend the place a certain panache. The beef patties are thin, but the tomato, white onion and pickle accompaniment is generous. Order the unevenly cut wedge fries, which are greasy but good. And your kids will looove the fruit milkshakes.