Juicy lucysor cheese-stuffed burgersput the cheese on the inside. They are, as their name implies, deliciously juicy. In these days of concerns about food safety in regards to ground beef, they have the added benefit of guaranteeing that even though you cook the meat to well done, you'll get a moist, juicy burger. Cook them perfectly with these 10 tips for perfect burgers. There is some disagreement about which south minneapolis bar first served juicy lucys, but experts agree that south minneapolis is their home.