This company brings Mexican food to the heartland. Taco Mayo Franchise Systems operates a chain of quick-service eateries offering Mexican fare at more than 80 locations in about 10 central and southern states. The restaurants serve a variety of Tex-Mex standards, including burritos, quesadillas, and nachos, as well as some sandwiches and salads. The chain was started in 1978 (in the month of May, hence the chain's name), and began franchising in 1980.