Heat the sesame oil in a large pan or wok, add the spring onions, ginger, and garlic, then fry until the onion has softened. Add the remaining ingredients for the broth, bring to a boil, then simmer while you prepare the tofu.
Pat the tofu dry, slice it into roughly 2cm squares, 1cm deep. Have a bowl ready with the cornflour and another with the sesame seeds. Stir the soy sauce, miso paste, peanut butter, and water together to create a glaze. Heat 2 tablespoons of sesame oil in a frying pan big enough to fit the tofu. Once the oil is hot, coat the tofu in the cornflour, then glaze, then coat with the sesame seeds and fry. Fry on medium for 3 minutes or until golden, then turn over and repeat.
Place your golden sesame tofu aside on a piece of kitchen towel. Add your vegetables to the broth along with the noodles and let it simmer for 5 minutes.
Serve in deep bowls with plenty of broth, the sesame tofu, a little chilli crisp oil, a few scattered nori sheet pieces, chopped fresh herbs, and a wedge of lime. Enjoy.