The hamburger originated in Germany, from Hamburg, so ordering a smash burger at a German restaurant brings the story full circle. At Franzel, we use fresh beef, smash it thin on a hot griddle, melt American cheese into every crevice, add caramelized onions, and finish it with a house sauce made from shallot, garlic, egg yolks, German sunflower oil, Löwensenf mustard, Alte Meister vinegar, Maggi, Fondor, paprika, and Knax pickles.
