Wash, quarter and seed the tomatoes. Cut the flesh into small cubes. Peel and finely dice onion. Wash basil, shake dry, pluck leaves from stems and cut into strips. Mix tomato and onion cubes, basil and vinegar. Season with salt and pepper
Peel the potatoes and cut or slice them very thinly. Heat frying oil. Fry the potato slices for 2-3 minutes in portions. Drain on kitchen paper and season with salt
Rinse steaks and pat dry. Heat the oil in a pan. Fry the steaks for 2-3 minutes on each side. Season with salt and pepper, wrap in aluminium foil and let rest for about 3 minutes
Remove the steaks from the foil. Serve with potato chips and tomato salsa