Divide the masa into 6 balls. Press each one between 2 sheets of plastic wrap to form 6inch rounds about 1/8inch thick. Heat a dry non-stick pan or well-seasoned griddle pan over medium heat. Toast the gorditas, turning frequently, for 3 to 4 minutes per side or until speckled and golden on the outside and puffy. Set aside for up to 6 hours before finishing the dish.
In a large, heavy saucepan or deep fat fryer, heat 2 inches of vegetable oil to 350 degrees. Deep fry the gorditas, in batches, until golden brown. When cool enough to handle, split open like pita bread and fill the pockets with either Carne Asada or Grilled Fish and White Bean fillings.
c.1997, M.S. Milliken & S. Feniger, all rights reserved