Whisk together the sauce ingredients.
1
Cook the ground chicken in sesame oil, followed by the minced yellow onion and red bell pepper, then the garlic and water chestnuts.
2
Now, whisk in the sauce. Stir to coat, then simmer.
3
Spoon some of the mixture into the lettuce leaves. Top with the sliced green onions and chopped peanuts, then serve.
4