Place masa in a large mixing bowl. Pour water over masa and gently stir.
Allow mixture to sit for about 5 minutes.
Continue to mix masa until no lumps remain and a dough forms.
Taking 1 ½ -2 tablespoon of dough at a time, form a ball.
Take a piece of wax paper or plastic wrap and place it onto a clean surface. Place the ball of dough onto the plastic wrap and top with another piece of plastic wrap.
Taking the back of a heavy bottom skillet, press the skillet evenly and firmly over the covered ball of dough until a flat and round, raw tortilla forms, about ⅛ inch thick. (if you have a tortilla press you can use it in place of the skillet). Repeat until all tortillas have been pressed.
Heat a large skillet or griddle over medium heat. Place tortillas onto the hot surface, a few at a time, and cook for 3 to 4 minutes on each side.
Store cooked tortillas covered in a clean towel to keep warm and pliable. Repeat unto all tortilla have been cooked. Serve.