India, May 5 -- At the age of 22, Bert Mueller left the United States and moved to India with two friends, a chef, and a dream. Today, he's the millionaire behind the super-successful restaurant chain California Burrito, widely credited with popularising Mexican cuisine in India.

For Mueller, the journey started during a study programme in college for which he visited India. According to CNBC Make It, a fellow student in the study programme brought Mexican food for her host family and they absolutely loved it. When Mueller saw how much the Indian family had enjoyed Mexican cuisine, the idea of bringing it to India was planted.

"Something clicked in my head that maybe this was something I could do - I could bring Mexican-inspired cuisine...