1. Peel the plantain and cut it into 1-inch chunks.
  2. Heat the oil in a large skillet. Place the plantains in the oil and fry on both sides, approximately 3 1/2 minutes per side.
  3. Remove the plantains from the pan and flatten the plantains by placing in a plantain masher (aka tostonera) OR by placing a cup/glass/jar over the fried plantains and pressing down.
  4. After mashing, let cool for at least 30 minutes and place the cool mashed plantains in a zip locked bag and store in the freezer until ready to use.
  5. Whenever you want to eat patacones (aka tostones) remove the pieces that you want from the freezer.
  6. Heat the oil in a pan and place the frozen pieces in the hot oil (no need to thaw) and fry 1 minute on each side. Salt to taste and serve immediately.