Montina is a type of flour created from milled Indian rice grass, a type of grass native to Montana. Indian rice grass was grown and used by Native Americans as much as 7,000 years ago. (The grass is not related to rice.) The flour is gluten-free. Montina was determined to be gluten-free by Dr. David Sands, a plant pathologist working at Montana State University. Indian rice grass is now grown by local farmers and processed at an individually owned dedicated gluten-free plant. There are no GMOs in the growing of the rice grass or processing of Montina Flour.