1. Mix the teriyaki sauce, 1 tablespoon of water, and 1 tablespoon of soy sauce.
2. Marinate the tofu block, cut in half lengthwise, in the mixture for 2 hours.
3. Peel the garlic. Slice the ginger. Peel and wash the spring onion, cut it into sections. Slice the chili pepper.
4. Place all these ingredients, along with the remaining soy sauce and turmeric, in the broth and bring to a boil. Cook for 10 minutes.
5. Add the noodles and cook for another 5 minutes.
6. Meanwhile, boil the eggs for 6 minutes. Rinse them under cold water and peel them.
7. Heat a large skillet and brown the tofu blocks for 10 minutes, flipping them halfway through cooking.
8. In large bowls, divide the noodles, broth ingredients, tofu, eggs cut in half, and mushrooms. Pour the remaining hot broth over them, sprinkle with chives, and serve immediately.