Napa - California
This delicious bean comes with a lot of mystery. We know they've adapted beautifully to the Willamette Valley, but the question is whether they were brought by pioneers in the 19th century or by an associate of Dr. Martin Luther King, Jr in the 1970s. The only references seem to be from seed companies telling one or the other story. But whatever their origin, we can say for certain that they're delicious with a mild flavor, making them a perfect canvas for however you want to prepare them.