Slice your tofu horizontally about 0.5cm thick. Use a glass or mould to cut out a circle. You should get about 4 to 5 circle slices.
You can use the rest of the tofu to make a scramble or tofu chorizo.
In a bowl, combine mirin, soy sauce, liquid smoke, maple syrup and marinate your tofu slices for 15 to 20 minutes.
Prepare your broth. Add some sesame oil to a pot and saute the ginger. Add water, hot bean paste, soy sauce and mirin.
Stir until well combined. Bring to a boil and simmer for 5 minutes.
Meanwhile, boil your noodles according to package instructions and drain.
Fry your tofu until crispy on both sides for a few minutes. Add the remaining marinade to the tofu to get a sticky, saucy texture.
Add noodles to a bowl, pour in broth, assemble vegetables, chashu and the garnish of your choice. Serve hot!