DENVER – When Colorado launched retail marijuana sales in 2014, all sorts of pot-related businesses began booming. Entrepreneurs like Wanda James and her husband, Scott Durrah, looked for creative ways to continue cashing in on the new, marijuana-infused phenomenon.

They were already restaurant owners and ran a medicinal marijuana dispensary, but they had cooked up another idea that they hoped would bring in even more business: A marijuana cooking school for people over the age of 21.

“It’s completely unique. There are no other cooking schools, and we’re seeing different chefs now starting to get involved in it,” James said. “The idea of having an infused food is amazing, but what we have found is the milligram levels in a lot of infused foods is so much higher than most Americans or most people are able to deal with.”

She added: “We want to be able to show people how to enjoy the high of cannabis with infused foods but not go overboard and to be able to explain to people what their body is going to be able to handle and how to ease them into it.”

But setting up the new business hasn’t been without obstacles. James said the banking industry is still tough on pot entrepreneurs. Since the federal government still classifies marijuana as an illegal substance, many banks are afraid to handle so-called drug money, making it difficult for businesses to manage their income and obtain loans to grow their businesses.