Cut the chicken into 1 centimeter pieces. Mix together the soy, mirin, miso and sake.
Marinate the chicken in this for at least 1 hour and then thread the chicken pieces onto skewers.
Remove the stalk from the mushroom and place this onto the end of the skewer.
Preheat a grill until it is very hot. Cook the skewers on the grill turning them often.
As they cook, brush any remaining marinade over them. Cook for around 5 minutes or until the chicken is cooked through.
Finish by sprinkling the sesame seeds over the skewers.
«Yakitori usually refers to skewered chicken but try using asparagus and tofu with the same marinade.»