- Drain and squeeze out any excess liquid from the canned tuna before mixing it with all the other ingredients (except for the olive oil) in a medium-sized bowl.
- Shape the mixture into small patties, about 2 inches (5 cm) wide and 2/5" (1 cm) thick.
- In a large frying pan over medium heat, add enough oil to coat the base of the pan. Once the oil is hot add the tuna patties to the pan. To avoid overcrowding, you may need to fry them in batches. Flatten them by lightly pressing down with a spatula. Cook for 3-4 minutes per side, until golden brown and crispy.
You can make the burgers dairy-free by replacing the shredded cheese with 1 more tbsp of mayonnaise per serving.