Sales trends of natural wine are notoriously hard to track because of
 its unclear definition. Still, these wines appear on more and more 
restaurant wine lists, specialty grocery stores, and wine bars devoted 
to popularizing low-intervention wines. Martha Stoumen, owner and 
winemaker at Martha Stoumen Wines, has dedicated herself to natural 
farming and winemaking with a culture of patience. She shares her 
experience and insights into the business of natural wine.