Joanne Chang celebrates ‘Flour, too’

Matthew J. Lee/Globe staff

Chef Joanne Chang chatted with her longtime customers E. Byron Hensley Jr. and his wife, Joann Hensley, at a signing for Chang’s new cookbook, “Flour, Too.” The launch party for the book was at the Back Bay location of Flour. Hensley Jr. runs Seniorlink, which helps the elderly get care at home.