Riso violet is an autochthonous variety of naturally purple-colored rice cultured by Eleonora Bertolone. The rice is grown and sold exclusively by her company Risodinori, located in Collobiano. Both the plant and the grain are intensively purple-colored due to the presence of anthocyanins - antioxidant and anti-inflammatory substances that make this rice look beautiful on the plate, but it also provides the rice with great aromatic richness.