Iowa has corn. Kansas has wheat. The preferred crop in northern California, however, will never be a Wall Street commodity. This CNBC Original documentary examines the pot industry of Mendocino County, which forms part of the so-called Emerald Triangle-the cannabis capital of the U.S. Sizing up the financial clout of pot-farming (both legal and criminal) as potentially two-thirds of the local economy, the report also exposes the increasingly violent side of the trade. A visit to Oakland's Blue Sky Cafe, which offers a menu of pot-based food and drink, further illuminates marijuana's legal ambiguities in the Golden State. A final segment features Bruce Perlowin, who used to run a multibillion-dollar import business-ferrying pot beneath the Golden Gate Bridge.