The additive used in the present invention is capable of maintaining a pH of 8.5 to 9 and may be of a material of the class consisting of sodium, potassium and calcium hydroxides, sodium carbonate, sodium bicarbonate and any other material suitable in a concentration of from 0.1 to 0.8% of the weight of the tortilla, and additives to an extent to maintain a pH of 8.5 to 9 are what should be used i