This is favorite of mine when eating at Chinese restaurants though the taste tends to be inconsistent. Well, when faced with dissatisfaction -- make your own. I didn't follow a recipe for this, i just used ingredients i thought they would use and let my taste buds guide me.
I started by marinating the chicken (mostly thigh fillets) in corn starch, Chinese cooking wine, cracked black pepper, 1 egg white and a few tablespoons of bottled garlic black bean sauce. I left it for about 30 minutes then proceeded to saute garlic and onions followed by a sliced bell pepper. I then added the chicken, some some soy sauce and let it simmer till the chicken was cooked. As i always want this accompanied by some veggies, i blanched some Chinese kangkong and place it a plate and covered it with the chicken.
Another way of doing this is coating the chicken in flour and deep frying it, extra black bean sauce is added onto the sauteed garlic, onions and bell pepper. Pour over the chicken when done. Either way, is good!