Salad with Steak and Nectarine

Ingredients 10 oz beef tenderloin (or rump steak) 4 cups arugula 1 nectarine 3 tomatoes ½ oz mint 1 cup nut mix 1 chili pepper (red) 1 tsp mustard (medium-hot) 1 tbsp balsamic vinegar 4 tbsp olive oil 1 tsp sugar salt...