Homemade Corn Tortillas Ingredients 1 ¾ cups (9.5 ounces) masa harina for tortillas, (I used the Maseca brand) 1 cup plus 2 tablespoons hot tab water 2 tablespoons water, at room temperature 1 Gallon-size Ziploc bag Instructions Using a wooden spoon, mix masa harina and 1cup plus 2 tablespoons hot tab water in a large