Prepare the Sauce: In a small bowl, combine 2 tablespoons of oyster sauce, 2 teaspoons of light soy sauce, 2 teaspoons of dark soy sauce, 1/2 teaspoon of fish sauce, and 1 tablespoon of brown sugar. Stir well and set aside.
Marinate the Protein: If using chicken, slice 6 oz of chicken thigh and combine it with 1/4 teaspoon of dark soy sauce in a medium-sized bowl. Toss to coat and set aside.
Prepare Garlic and Chili: Use a mortar and pestle or a small food processor to pulverize 4 cloves of garlic and 3 to 5 fresh Thai chili peppers until finely ground.
Prepare the Noodles: If using fresh rice noodle sheets, slice them into 1-inch thick strips. If using dried rice noodles, rehydrate or boil them according to the package instructions.
Heat the Oil: In a large nonstick pan over medium-high heat, add 1 tablespoon of canola oil (or peanut oil) and heat until hot.
Stir-Fry Aromatics: Add the ground garlic and chili mixture and stir-fry for 30 seconds or until fragrant.
Cook the Protein: Spread the marinated chicken in the pan without overlapping. Cook undisturbed until the bottom is lightly browned and the top is pink. Flip the chicken and stir-fry until cooked through.
Add Vegetables: Toss in 4 stalks of sliced Chinese broccoli and 1/2 cup of baby corn (or preferred veggies). Stir until the chicken is no longer pink.
Combine Noodles and Sauce: Add the noodles to the pan and pour in the prepared sauce. Use tongs to toss everything together until the noodles absorb the sauce and begin to crackle.
Add Basil: Remove the pan from heat and stir in 1/2 cup of packed basil until just wilted. Serve hot!