01 - Whisk together soy sauce, hoisin sauce, sesame oil, rice vinegar, honey, and chili flakes in a small bowl. Set aside.
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.
03 - Add shiitake mushrooms and cook for 3-4 minutes until softened and beginning to brown.
04 - Add carrot and bell pepper. Sauté for another 2-3 minutes until crisp-tender.
05 - Pour the sauce over the vegetables, toss well, and cook for 1-2 minutes until everything is glazed and heated through.
06 - Remove from heat and stir in green onions.
07 - Spoon the mushroom mixture into lettuce leaves. Top with toasted sesame seeds and cilantro.
08 - Serve immediately while lettuce is crisp and filling is warm.