New Slow Food Presidia: South African Rainbow Maize and Rex Union Orange 9 July 2018 Today Rainbow Maize and the Rex Union Orange have officially joined Slow Food’s Presidia project, which supports quality production at risk of extinction in the face of industrial food production. Both traditional varieties have been handed down through generations of family farmers and must be saved for future generations. Rainbow Maize is an heirloom corn variety that was grown in …