Easy beef, vegetable and noodle steamboat

Name: Easy beef, vegetable and noodle steamboat
Prep time: 5 min
Cook time: 15 min
Total time: 20 min
Cuisine: Asian, Chinese
Ingredients: 1L (4 cups) beef stock; 1 star anise; 4cm piece ginger, sliced; 2 large garlic cloves, sliced; 2 long red chillies, seeds removed, thinly sliced on an angle; 300g dried thin rice or egg noodles; 1 tsp sesame oil; 1 tbs peanut oil; 1 leek (pale part only), thinly sliced; 2 bok choy, quartered; 200g firm tofu, cut into 2cm pieces; 2 tbs soy sauce; 2 x 200g sirloin steaks, trimmed, very thinly sliced; 100g punnet black fungus (cloud ear, or use enoki or thinly sliced shiitake); 2 spring onions, thinly sliced on an angle