Cubing and chopping fresh tuna fillets may seem time-consuming, but the end product is delicious and worth the effort. Chopped and mixed with Asian seasonings, the tuna makes a nice alternative to beef burgers.
Place fillets and next 4 ingredients in a food processor; process until fish is finely chopped. Shape fish mixture into 4 (4-inch) patties. Brush patties evenly on each side with oil. Place on grill rack coated with cooking spray. Cover and grill 2 minutes on each side. Serve with Mango-Jalapeño Jam.