Clean the chicken breast and enoki mushrooms, then cut the chicken into bite-sized pieces.
Heat cooking oil in a pan and grill the chicken breast until golden brown on both sides.
When the chicken breast is about 80% cooked, add the enoki mushrooms and stir-fry.
Pour in teriyaki sauce and simmer, mixing well until ingredients are coated.
When the sauce thickens, transfer the dish to a serving plate.