Piki is a bread made from blue corn meal used in Hopi cuisine. == Preparation == Blue corn, a staple grain of the Hopi, is first reduced to a fine powder on a metate. It is then mixed with water and burnt ashes of native bushes or juniper trees for purposes of nixtamalization (nutritional modification of corn by means of lime or other alkali). The thin batter is then smeared by hand over a large flat baking stone that has been heated over a fire and coated with oil made from pounded seeds of the native American plants squash and sunflower, and also from the seeds of watermelon, which thou...