Ryan Kunde sits in his home on the outskirts of Sebastopol in southern California, sipping Pinot Noir. It comes from his own DRNK Winery, with its 100-metre cave burrowed alongside vineyards and a golf course. At 33, he's the fifth generation of the Kunde family, well known in the Californian wine industry for producing high-quality wine for over a century. He runs the business with his wife Katie and her parents, Dale and Nancy. "Hence the label," he chuckles. "DRNK - for the four of us: Dale, Ryan, Nancy, and Katie". However, Kunde is the first in his family to delegate some responsibilities to an assistant. "Spidey is great. He really helps me to sample the vineyards much, much better," he says.