Preparation. Heat oil in a large skillet. Saute chicken over medium high heat until browned on the outside and cooked through. Remove the chicken from the pan and set aside. In the same pan the chicken was cooked in, add soy sauce, mirin, brown sugar, sesame oil, ginger, garlic and fish sauce. Bring to a boil and reduce heat and simmer the Prepare the marinade first. Stir together the soy sauce, brown sugar, water, garlic, ginger, and 1 Tbsp of the cooking oil in a bowl. Place the chicken in a shallow bowl or dish, then pour the marinade over top. Turn the chicken a couple of times to make sure it's well coated. cbkfmt.