Authentic Lomo Saltado Recipe Peru, South America

Name: Lomo saltado
Prep time: 5 min
Cook time: 15 min
Yield: 2 servings
Cuisine: Peruvian
Ingredients: 450g (1 lb) loin, steak or rump; 2-3 tomatoes, cored and cut into thick wedges; 1 medium red onion (cut into 8 same-sized strips); 1 ají amarillo pepper, deseeded and deveined, cut into thin strips; 1 tbsp + 1 tsp (20ml) soy sauce (sillao); 1 tbsp (15ml) red vinegar; 2 tsp chopped parsley; salt and pepper, to taste; FOR SERVING; French fries + cooked rice