This Heirloom Blue Corn Masa Harina is a fine-ground nixtamalized corn flour perfect for making not just tortillas but also other favorites like tostadas, tamales, pupusas, arepas and more. Its deep flavor and rich color comes from single origin blue heirloom corn, which is cooked, slow dried and milled to perfection in small batches. Blue corn is naturally rich in anthocyanins, the same antioxidants that make blueberries blue and are connected to a whole host of health benefits. Never genetically modified. Always gluten-free.