Clean and wash spring onions and cut them diagonally into rings. Peppers clean, wash and cut into cubes. Peel and halve the onion and cut into thin slices. Put the beans in a sieve, rinse and drain well. Drain the tuna in a sieve and pull them apart slightly
Mix the spring onions, peppers, onions, beans and tuna. Season vinegar with salt and pepper. Fold in olive oil. Wash the meat and dab dry. Heat oil in a pan. Season meat with salt and pepper and fry for about 6 minutes, turning. Serve schnitzel with salad