01 - Whisk together soy sauce, hoisin sauce, sesame oil, rice vinegar, honey, and chili flakes in a small bowl until well combined. Set aside for later use.
02 - Heat a non-stick skillet or wok over medium-high heat. Add a splash of oil and sauté minced ginger and garlic for 30 seconds until fragrant, being careful not to burn them.
03 - Add sliced shiitake mushrooms to the pan and cook for 3-4 minutes, stirring occasionally, until they begin to soften and release their moisture.
04 - Incorporate julienned carrot and sliced bell pepper into the skillet. Sauté for another 2-3 minutes until vegetables are crisp-tender but still retain some crunch.
05 - Pour the prepared sauce over the vegetables and toss well to coat evenly. Continue cooking for 1-2 minutes until everything is glazed and heated through.
06 - Remove the skillet from heat and stir in the sliced green onions, allowing them to wilt slightly from the residual heat.
07 - Spoon the mushroom and vegetable mixture into individual lettuce leaves. Top with toasted sesame seeds and fresh cilantro leaves.
08 - Arrange the filled lettuce wraps on a serving platter and serve right away while the filling is still warm and the lettuce remains crisp.