2) Preheat a large nonstick frying pan to medium high heat. Place patties in the hot pan and cook for 6 minutes on each side.
3) Meanwhile make the Papaya salsa: Combine the papaya, red pepper, red onion, serrano or jalapeno, coriander and orange juice in a bowl. Season with salt to taste.
3) Squeeze the lime juice over the patties before removing them from the heat. Serve in buns topped with lettuce leaves and salsa.