To Prep
In a bowl, mix together the miso, soy, mirin and sake together.
In a zip lock bag, add the chicken thighs and the marinade mixture together and mix well. Seal and allow to marinate overnight or for a few hours.
To Cook
Preheat an oven to 220°C and line a baking tray with aluminium foil.
Using paper towels to wipe off the extra marinade from the chicken before placing them on to the baking tray.
Bake the chicken for 15 mins before flipping and continuing to cook for another 10 mins or until nicely charred.
Remove from the oven to rest slightly before serving.
To Serve
Slice the chicken and plate! Serve by itself or with rice and enjoy!