The next step is to fry them in oil until the shells are golden brown. These tacos, minus the beans, are served all over where i come from. Every bar around has a taco tuesday. I moved 30 minutes south and no one has ever heard of them. They are still using the hard Ortega shells that fall apart when you take your first bite. I would love to corrupt everyone down here and get them to add one more fried food to the menu, but that seems doubtful.
I dont know enough about Spanish food to know if this is a traditional food made in their households. All I know is that we learned to make it from our friend who learned from her mother who is of Mexican ancestry. And that we love them! Keep the unfried shells in the fridge for snacks. Just microwave for 30 seconds and add whatever you want! Enjoy!