Cut 300 g boneless chicken thigh into bitesize pieces. In a large bowl, combine all of the marinade ingredients (2 tbsp yellow miso paste (awase), 2 tbsp mirin, 2 tbsp sake, 1 tbsp Japanese soy sauce (koikuchi shoyu), 1 tbsp grated garlic, 1 tbsp grated ginger root, 1 tsp sugar, 1 tsp sesame oil and ¼ tsp chili powder) and mix until smooth. Place the chicken in the marinade ensuring it's all coated, then cover and refrigerate for 1 hour.
Heat a pan on medium and add ½ tbsp cooking oil. Add ¼ green cabbage, ½ carrot and ½ yellow onions. Sprinkle with a few pinches of salt and stir fry for 2-3 minutes or until slightly softened.
Add the chicken and marinade to the pan, then cover with a lid and reduce the heat to medium-low. Steam-fry for 3-5 minutes or until the chicken is cooked through.
Remove the lid and increase the heat to medium. Stir fry for 1-2 minutes to reduce the sauce slightly.
Garnish with chili threads and serve with a generous helping of fluffy rice. Enjoy!