Australian Native Food, Discover Australia, Native Tastes of Australia Versatile Rosella January 12, 2022 The Editor Iced Rosella Drink with Blueberry Kakadu Plum Cookies It’s summertime and the rosellas are ready to pick. You can use the fresh flowers to make rosella concentrate or rosella vinaigrette. Dry them for use in tea or preserve for year round use.