1Heat the olive oil in a large skillet over medium heat.
Add the chopped onion and minced garlic to the skillet and sauté until the onion is translucent.
Add the ground turkey to the skillet and cook until browned, breaking it apart with a spoon.
Stir in the soy sauce, hoisin sauce, and grated ginger, mixing well.
Add the chopped water chestnuts and cook for another 2-3 minutes.
Remove the skillet from heat and let the mixture cool slightly.
Spoon the turkey mixture into the center of each lettuce leaf.
Wrap the lettuce around the filling and serve immediately.