Thought fast food restaurants were all about new inventions? Think again. A New York City–based luncheonette is putting a fresh spin on old-school burger recipes. Founded by burger expert George Motz in 2023, Hamburger America is the result of decades of research into America’s original fast food recipes. Every month, the joint celebrates a different regional burger specialty that many have never even heard of – including the quirky and divisive loose meat sandwich (pictured).

Click or scroll on to peek inside this haven for burger purists – and discover the other fast food joints that are reviving America's lesser-known burger styles.