Coat the Chicken: In a large bowl or plastic ziptop bag (for easy cleanup), toss the chicken with the ¼ cup cornstarch, 1 Tablespoon oil, and salt or MSG until evenly coated.
2.5 pounds boneless skinless chicken thighs,, 1/4 cup cornstarch, 1 Tablespoon neutral oil,, 1 teaspoon Morton kosher salt or ½ teaspoon MSG*
Brown the Chicken: Heat 2 Tablespoons neutral oil in a large deep skillet or wok over medium high heat. Add half of the chicken in a single layer and cook for 6–8 minutes, stirring occasionally, until golden and cooked through. Remove to a plate and repeat with the remaining chicken, adding more oil if needed.
2 Tablespoons neutral oil,
Whisk the Sauce: In a small bowl, whisk together 1 Tablespoon cornstarch and 1 Tablespoon cold water until dissolved. Then whisk in the orange juice, soy sauce, rice vinegar, orange zest, and sugar until smooth and combined.
1 Tablespoon cornstarch,, ¾ cup fresh orange juice*, ¼ cup soy sauce, ¼ cup rice vinegar, 1 Tablespoon orange zest, ⅔ cup granulated sugar
Sauté Aromatics: In the same skillet (no need to wash), reduce the heat to medium low and add 1 Tablespoon toasted sesame oil. Stir in the garlic, ginger, and red pepper flakes and cook for 30–60 seconds, stirring constantly, until fragrant.
1 Tablespoon toasted sesame oil, 8 cloves garlic,, 1 Tablespoon ginger paste*, 1 teaspoon red pepper flakes
Add Sauce and Thicken: Pour the sauce mixture into the skillet. Bring to a simmer and cook for 1–2 minutes, stirring often, until the sauce thickens and turns glossy.
Add Chicken Back: Return the chicken and any juices to the skillet. Toss well to coat and simmer for another 1–2 minutes until everything is heated through and evenly glazed.