Lettuce Wraps

This is from a recipe I had for PF Changs lettuce wraps that I changed a bit.

Marinade:
1 tsp cornstarch
2 tsp soy sauce
2 tsp water
salt and pepper
1 T canola oil

1 1/2 pounds boneless, skinless chicken, cubed

4 T canola oil
½ C carrots, chopped
½ C celery, chopped
1 tsp fresh minced ginger
2 cloves garlic, minced
2 green onions, minced
1 (8 oz) can water chestnuts, minced

Iceberg lettuce

Cooking Sauce:
1 tbsp hoisin sauce
1 tbsp soy sauce
2 tbsp oyster sauce
2 tbsp water (or a little more)
1 tsp. sesame oil
1 tsp. sugar
2 tsp. Cornstarch

Marinade chicken for 15 minutes. Mix cooking sauce in bowl. Add 2 T canola oil to stir fry skillet and heat up. Stir fry chicken for 3-4 minutes until cooked. Set aside. Add 2 T oil to skillet and stir fry carrots and celery for a few minutes. Add ginger, garlic and green onions, stir fry for another minute. Add water chestnuts and cook another minute. Add chicken again and cooking sauce until thickened and hot. Serve in lettuce.
(Optional: 1 package cellophane Chinese rice noodles, prepared according to package and 1 (8 oz) can bamboo shoots, minced)

I halved the recipe, except for the cooking sauce and I used most of that. It was a little strong, though so I would either use more water or the normal amount of cooking sauce.