Boulder, Colorado, U.S.-based Rudi’s said the Hungry Hollow variety is made from hard white spring wheat grown by sixth generation farmer Fritz Durst in Hungry Hollow from Capay, California. The Sacramento Valley variety is made from with hard red winter wheat, also grown by Durst. Both varieties are certified organic under the U.S. Department of Agriculture’s (USDA) National Organic Program. Capay is about 35 miles west of Sacramento, California.