01 - Combine soy sauce, brown sugar, and water in a medium bowl. Stir until sugar completely dissolves. Set aside.
02 - Heat vegetable oil in a large skillet or wok over medium-high heat until shimmering.
03 - Add chicken pieces to the hot pan. Cook for 4–5 minutes, turning occasionally to brown all sides evenly.
04 - Add minced garlic and grated ginger to the pan. Sauté for 1 minute until fragrant, stirring constantly to prevent burning.
05 - Pour the prepared sauce over the chicken. Stir well to ensure all pieces are evenly coated.
06 - Bring to a simmer. Cook for 6–8 minutes until sauce thickens and coats the chicken, and chicken is cooked through to internal temperature of 165°F.
07 - Remove from heat. Garnish with sliced green onions if desired. Serve immediately with steamed rice or noodles.