Recipe(tried): Pon Pon Chicken

I've been making this for years. Someone gave the recipe to me, but I don't know the name of the book or the author. Sorry.

Pon Pon Chicken

2 cups steamed, boiled or gently simmered chicken, shredded
Lettuce leaves to cover serving platter
1 tablespoon chopped scallion
1 teaspoon or more chopped garlic
1 1/2 teaspoons finely choped ginger
3 tablespoons well-stired sesame paste (tahini)
1 1/2 tablespoons dark soy sauce
1 tablespoon white vinegar, preferably rice vinegar
1 teaspoon sugar
1 teaspoon monosodium glutamate (optional)
salt to taste
1 tablespoon chili paste with garlic
1 tablespoon sesame oil

Place the chicken on the lettuce leaves, arrranged on a serving dish.

Blend the remaining ingredients and pour the sauce over the chicken.