Wine Diamonds; Uncorking America’s Heartland

They call the kinds of wine grapes that grow in the upper Mississippi region, cold-hardy grapes, grapes bred to withstand extreme temperatures that would kill the traditionally grown grapes of California or France. These grapes, the farmers and wine makers of the Midwest are pushing the envelope of viticulture and enology, growing grape vines that not only survive but thrive at 40 below zero.