In a saucepan, over medium heat, pour the soy sauce, mirin and sugar and mix quickly with a whisk.
Reduce the sauce by half. As soon as you see a brown foam appear, wait 5 minutes, then remove from heat and leave it aside. The sauce will become thick. This yakitori sauce can be kept in the refrigerator.
Preparation of the chicken skewers
Soak your skewers in water while you prepare the chicken pieces.
Remove the skin from the chicken legs.
Then cut the pieces into 2.5cm cubes, about the size of a bite.
Cut up pieces of green onion stems
Alternate a piece of chicken and a piece of green onion on your skewer.
Grilling of yakitori
Grease your support and also your skewers with a brush coated with neutral oil.
Brown your brochettes well and don't hesitate to add oil so that they are well colored.
Once the skewers are cooked, brush them with yakitori sauce. Be generous! Your yakitori skewers are ready.