Peel the plantains and cut them in pieces, about 1.5 inch (3.5 cm) each.

Fry them in oil that has been pre-heated at 325ºF (163ºC) for about 3-4 minutes. Take them out of the oil and place them on paper towels to drain.

Using a tortilla press or "tostonera", flatten the fried plantain pieces to make slices that are about ¼ inch (1.25 cm) thick.

Raise the oil to 375ºF (190) and fry them again for about 3 minutes or until golden brown.

Take them out of the oil and place them on paper towels to drain. Season with garlic salt and serve immediately.