Steps
1. Heat some oil in a pan over medium heat.
2. Add the onions and fry for about 2 minutes, until they start to turn golden brown.
3. Next, add the olives and fry for an additional 1-2 minutes.
4. Then add the tuna and stir everything together.
5. Add the grated potato and bread crumbs.
6. Mix everything together and fry for about 5-7 minutes until the potatoes and bread crumbs are golden brown and crispy.
7. Once done, remove from the heat and place on a plate and serve.