Just minutes into the first class at the recent Midwest Wild Harvest Festival, Sam Thayer is already eating the foliage.
He lunges up a hillside and returns with a giant lobed leaf he identifies as red mulberry. Then he strips the top off a sapling branch and stuffs the young leaves in his mouth.
"Much tastier than white mulberry," he says.
Over his two-hour plant identification walk, Thayer darts into the underbrush several more times, offering students samples of bladdernut, peeling slippery elm to show the medicinal bark, and munching on cut-leaf coneflower shoots, a green known as sochan in the South.
Thayer is one of the gurus of the foraged foods movement, an irrepressible advocate of wild edibles and author of two deeply documented books on the topic, "The Forager's Harvest" and "Nature's Garden."
At a time when "wild-crafted" foods like morels and ramps flood local menus in springtime, when mixologists brag about the hand-gathered ingredients in their cocktails, and fiddlehead ferns and nettles are available at local co-ops, wild foods have become a new frontier for adventurous eaters.
But there's still a wide gap between those willing to try a seasonal entree at a restaurant and those who forage in their own backyards.
That's where teachers like Thayer, with his anyone-can-eat-wild ethos, and regional gatherings like the recent Midwest Wild Harvest Festival come in.