Make the sauce: add sugar, vinegar, soy sauce, and sesame oil and mix well.

Boil water and boil the Brussels sprouts, then cut them in half and arrange on a plate.

Place the chicken breast that you cut earlier into a plastic bag, add the potato starch, and toss to coat well.

Boil the chicken. If it's boiled, place it on the plate with the sprouts.

Garnish the chicken breasts with shredded ginger and finely chopped green onions.