Blue corn Blue corn and amaranth are ancient grains that have been held with reverence as staples of the Aztec diet for thousands of years. In homage to the communities and traditions that inspired our Tortilleria, we married together these grains creating a unique, subtly sweet and earthy flavour. We source amaranth from heritage farmers in Milpa Alta, meaning 'high corn field', which overlooks the ancient Aztec capital city of Tenochtitlan, known today as Mexico city.