. >> once a month, at his downtown denver restaurant, chef scott durrah teaches a cooking class. >> turn that up there. >> it's well-attended -- mostly retired and affluent boomers. it's nice to see a lot of familiar faces in here. >> it's exactly the market durrah and his wife and business partner, wanda james, want to reach. >> what we're seeing, which is really interesting, are older people -- i would say over the age of 30 -- and definitely women. >> tons of women. >> women -- and these women are your mom, you know, your grandmother. i mean, these are women that you see, you know, at the post office, at the daycare center. >> remember -- it's quiche. so, you can add whatever you'd like to your quiche. >> it's their new twist on classic cuisine that draws this crowd. the ingredients are common... >> we're gonna put a little sprinkle in there. >> ...except for one -- a colorado-grown herb. >> so, it's always important to make sure that you have high-quality pot. >> the secret ingredient? marijuana -- used only for medical purposes, of course, by those with a state license. >> so, right