Yuca, Mandioca as we call it, is known as the mother of Brazil, and is probably the most Brazilian of all ingredients! We have historically eaten the root itself, and thanks to some brilliant indigenous skills, we have also been consuming numerous of its bi-products as well, such as yuca flour and starch. In Southern California I usually find yuca at my local Whole Foods Markets, and/or Sprouts. Amazon sometimes has it as well. Try it in a recipe: Instant Pot Mashed YucaYuca Fries