Through the Mission global brand, we are one of the main suppliers of tortillas, tortilla chips and flatbreads for foodservice operators in the region, such as KFC, McDonalds’ or Domino’s Pizza, becoming an important partner for them in specialty breads solutions. Save Category as RSS Feed. 2.8 - 10 votes. Gruma Mission Foods. UK enquiries. Main producer of corn and flour tortillas in the United States and a serious competitor in tortilla chips, "tostadas" and taco shells. We have 101 plants at worldwide level. Gruma is the leading worldwide manufacturer of corn and flour tortillas and one of the largest companies in Mexico. More recently, the brand was also launched in the retail environment in Singapore, Malaysia and China, achieving great acceptance in these markets.