Becoming a wasabi farmer wasn’t initially part of the career plan for former electrical contractor Jeff Roller. But for those who know him, his pivot wasn’t all that surprising, he says. He and co-founder Tim Hall got the idea to start a wasabi farm about 15 years ago when Hall learned that most of the wasabi Americans eat is fake: Expert estimates cited in the Washington Post over a decade ago put the proportion of fake stuff at between 95% and…