In a large bowl, mix together the instant corn tortilla mix and water. Stir until cohesive, and then knead with your hands until you have a smooth dough. Add a spoonful of water or instant corn tortilla mix to adjust the texture so that you have a firm but pliable dough.
Divide the masa into 18-20 portions. Press out using a tortilla press and cook on a hot stove top griddle.
Find it online: https://www.kitchenwrangler.com/recipes/corn-tortillas/