Peel the plantain.
You can cut it round or long like me. It's important that it's reaaally think to make it nicer (about 1mm thick) so I recommend that you use a mandolin to have it nice and even.
Heat the oil to medium heat. If you're making them long make sure you're using a pan where they fit.
Fry the plantains in small batches so they don't stick to each other nor decrease the temperature of the oil.
Take them out and put onto a bowl with kitchen paper to absorb the excess fat.
Add salt and serve ????