With gleaming chrome, formica tables and sparkly red vinyl booths, this diner gives kids a taste of the 1950s with malts, burgers and Kroll’s regional German specialties that include fleischkuechle (a beef patty wrapped in dough and deep fried), knoephla (thick-cut square dumpling in a thick creamy soup), and kuchen, a custardy coffee-cake kind of dessert. They serve plenty of classic American pies, as well, along with comfort-food dinners, six-egg omelets and skillet breakfasts. Open 24 hours.