Shochu is a distilled spirit made from sweet potato, wheat or rice. Once overshadowed by beer and whisky, it's now a major player. As a low-carb drink it attracts health-conscious drinkers, and sales now outstrip those of sake. Shochu has a vast array of flavors and finishes: from a legendary label whose buyers are chosen by lottery, to regional varieties made with onions or chestnuts. Zero-waste plants are also making a mark in the industry. Tune in for the latest on Japan's shochu business.