To Prep
To make the sauce for the dish, combine rice vinegar, soy sauce, sesame paste and chilli oil in a small mixing bowl.
To Cook
Fry the pork mince over a medium heat until there are no pieces that are still pink. Add in the sake, soy sauce, sweet bean paste and spicy chilli bean paste.
Continue to cook until the mince is well coated and the sauce has begun to thicken. Set aside.
In a pot, bring the chicken broth to a boil and then add in the soy milk. Return the mixture to almost a boil and then remove from the heat.
To Serve
Place half of the zasai, green onions and sauce into a serving bowl before pouring in some of the soy broth. Add the noodles, meat and vegetables, then garnish with green onion and toasted sesame seeds. Serve!