Prep your produce. Rinse and gently separate the lettuce leaves, then pat them dry.
Dice onion, bell pepper, mushrooms, and water chestnuts. Mince garlic and ginger. Slice green onions.
Mix the sauce. In a small bowl, whisk soy sauce, hoisin, rice vinegar, honey, sesame oil, sriracha, and water.
If using cornstarch, whisk it in until smooth.
Cook the aromatics. Heat the oil in a large skillet over medium-high heat. Add onion and bell pepper; cook 3–4 minutes until softened. Stir in garlic and ginger for 30 seconds, until fragrant.
Brown the turkey. Add ground turkey, breaking it up with a spatula.
Cook 5–7 minutes until fully browned and no longer pink. If excess liquid forms, let it cook off to concentrate flavor.
Add mushrooms and chestnuts. Stir in mushrooms and water chestnuts. Cook 2–3 minutes to soften mushrooms and warm the chestnuts.
Season with a pinch of salt if needed.
Sauce it up. Pour in the sauce. Stir and let it simmer 1–2 minutes until slightly thickened and glossy. Fold in green onions and remove from heat.
Assemble the wraps. Spoon warm turkey filling into lettuce leaves.
Top with cilantro, sesame seeds, and a squeeze of lime. Add chili crisp or extra sriracha if you like heat.
Serve immediately. Arrange wraps on a platter and enjoy while the lettuce is crisp and the filling is hot.