Wash the lettuce leaves carefully and pat dry.
Separate the leaves and set them aside.
Dice the water chestnuts into small pieces.
Chop green onions, keeping whites and greens separate.
Mince the garlic and ginger finely.
Having everything ready makes cooking easier.
Mix hoisin sauce, soy sauce, and rice vinegar.
Add sesame oil and sriracha if using.
Whisk until smooth and well combined.
Set this sauce mixture aside for later.
Heat vegetable oil in your skillet over medium-high.
Add the ground chicken to the hot pan.
Break it up with your wooden spoon.
Cook until no pink remains, about 5 minutes.
The chicken should be nicely browned.
Push chicken to the pan's edges.
Add garlic, ginger, and white onion parts.
Stir these for about 30 seconds.
They should smell amazing and fragrant.
Add water chestnuts to the chicken mixture.
Pour in your prepared sauce over everything.
Stir well to coat all ingredients evenly.
Cook for 2 more minutes until heated through.
Add green onion tops at the end.
Spoon the hot chicken mixture into lettuce cups.
Serve immediately while everything is still warm.
Let everyone build their own wraps.
Enjoy this delicious homemade creation!