Cut the ends of the plantains, using a knife. Make three long cuts through the skin from the top to the bottom of the plantain on three different sides. Peel each slit off.
Cut the plantain in chunks about 1-2 inches thick.
Heat up your oil to about 375F.
Place the cut plantains inside the oil and fry for about 1-2 minutes until they are gold. Remove them and place them on a plate lined with paper towel.
Using a tostenera, or any flat object, smash the plantain flat, to about ¼ of an inch thick.
Place the smash plantain into the fryer again, and fry for about 3-4 minutes, until golden brown.
Remove and place them on a plate lined with paper towel, sprinkle with salt, and serve!