Creating the Best Mongolian Chicken is easy if you follow these steps:

1. Prepare the Chicken: In a bowl, toss the sliced chicken with cornstarch until well coated. This helps to create a crispy texture when cooked.
2. Heat the Oil: In a large skillet or wok, heat the vegetable oil over medium-high heat until shimmering.
3. Cook the Chicken: Add the chicken to the skillet in a single layer. Cook for about 5-7 minutes or until the chicken is golden and cooked through. Remove the chicken from the skillet and set aside.
4. Sauté Aromatics: In the same skillet, add the white parts of the green onions, garlic, and ginger. Stir-fry for about 30 seconds until fragrant.
5. Make the Sauce: In a bowl, whisk together the soy sauce, brown sugar, rice vinegar, sesame oil, and red pepper flakes (if using). Pour this mixture into the skillet.
6. Combine: Bring the sauce to a simmer and add the cooked chicken back into the skillet. Stir to coat the chicken evenly with the sauce.
7. Reduce the Sauce: Allow the sauce to simmer for 3-4 minutes, letting it thicken slightly.
8. Garnish: Remove from heat and stir in the green parts of the green onions.
9. Serve: Serve the Mongolian chicken over cooked rice, garnished with sesame seeds if desired.

By following these steps, you’ll have a delicious dish that captures the essence of Mongolian cuisine.