David Griswold is connecting farmers and roasters for a more sustainable harvest. By Hanna Neuschwander Monthly Portland Culture January 5, 2015 Coffee growers and roasters trek to Panama’s Hacienda la Esmeralda. Image: Courtesy Mikerussellfoto.com via Monthly Portland Culture Rainclouds sweep over a plateau studded with newly planted coffee trees. On a dirt road cutting through the fields, Portlander David Griswold herds about 25 people from 11 countries for a group photo. For these coffee farmers from Brazil, Colombia, and Peru, and coffee roasters from Norway, Australia, and the US, this amounts to a pilgrimage. Griswold, the president and founder of the Portland coffee importer Sustainable Harvest, has led them to one of the world’s most storied coffee farms, Panama’s Hacienda la Esmeralda. Here, as Griswold puts it, “a watershed moment in coffee history took place.” A decade ago, Esmeralda almost single-handedly created a niche for hi...