One great thing about millennial consumers is that they don't remember their parents' mistakes. This is why Lambrusco is ripe for a comeback. But it's not an overnight sensation: Medici Ermete, a fourth-generation winery, has spent two decades painstakingly laying the groundwork.

Lambrusco is a red sparkling wine from the Emilia-Romagna region of northern Italy. The grapes it is made from are believed to have been domesticated from local wild grapes (lambrusco means "wild grape" in Italian) but they are vitis vinifera, the species responsible for every great wine from Albarino to Zinfandel. Lambrusco grapes are not related to the lesser vitis labrusca native to North America.