Shake Shack started as a hot dog cart in New York City's Madison Square Park in 2001. It got super popular, so they built a real restaurant in 2004. They expanded to serve more than hot dogs and shakes, adding yummy burgers and fries.  People loved the fresh food and friendly vibe. Shake Shack's idea of "enlightened hospitality" made it special, and it spread to different cities and countries. "Enlightened hospitality" means making sure every customer has an awesome experience. They cared about the planet too, using eco-friendly materials and giving back to communities.