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, then sauté ginger and garlic for 30 seconds until fragrant, being careful not to burn them.
03 - Add shiitake mushrooms to the pan and cook for 3-4 minutes, stirring occasionally, until they have softened and released their moisture.
04 - Add julienned carrot and sliced bell pepper to the pan. Sauté for another 2-3 minutes until vegetables are crisp-tender but still retain some crunch.
05 - Pour the prepared sauce over the vegetables, toss well to coat evenly, and cook for 1-2 minutes until everything is glazed and heated through.
06 - Remove the pan from heat and stir in sliced green onions, allowing them to wilt slightly from the residual heat.
07 - Spoon the warm mushroom mixture into prepared lettuce leaves. Top generously with toasted sesame seeds and fresh cilantro leaves.
08 - Arrange the filled lettuce wraps on a serving platter and serve immediately while the filling is still warm.