1Beat eggs and lemon juice in a bowl; stir in Parmesan cheese and bread crumbs to make a paste. Fold in tuna and onion until well-mixed. Season with black pepper. Shape tuna mixture into eight 1-inch-thick patties.
2Heat vegetable oil in a skillet over medium heat; fry patties until golden brown, about 5 minutes per side.
Footnotes
Tip
Aluminum foil helps keep food moist, ensures it cooks evenly, keeps leftovers fresh, and makes clean-up easy.