A budtender prepares an edible sale for a customer at LivWell Broadway in Denver. Craig F. Walker/Denver Post via Getty Images hide caption

toggle caption
Craig F. Walker/Denver Post via Getty Images

Marijuana at a medical marijuana dispensary in Los Angeles. Twenty-three states and the District of Columbia have legalized medical marijuana. David McNew/Getty Images hide caption

toggle caption
David McNew/Getty Images

Low-dose pot-infused cookies, called the Rookie Cookie, sit on the packaging table Sept. 26 at The Growing Kitchen in Boulder, Colo. The state legalized recreational pot use last year. Brennan Linsley/AP hide caption

toggle caption
Brennan Linsley/AP

Edibles available at LoDo Wellness Center, a retail marijuana and medical marijuana dispensary and grow facility in downtown Denver. Matthew Staver/Landov hide caption

toggle caption
Matthew Staver/Landov

Colorado's Pot Brownies Now Come With Instructions

  • Download
  • <iframe src="https://www.npr.org/player/embed/343432131/343484379" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript