Otto Frederick Eckhardt (May 10, 1926 – August 10, 2015) was an Americanbrewer, homebrewing advocate and publicist.[1] He wrote about brewed beverages—beer and sake, and wrote the 1989 book, The Essentials of Beer Style. He called himself a "beer writer,"[2] a "beer historian,"[3] and a "beer critic."[4] He was a local celebrity in Portland, Oregon, which Eckhardt described as "the brewing capital of the world."[5]