In a mixing bowl, combine the ground chicken, shrimp, mushroom, carrots, onion, chicken powder, ground black pepper, garlic powder, salt, sesame oil, and egg. Mix well using a spatula.
Lay a piece of wonton wrapper in a plate. Scoop about a tablespoon of mixture and place it in the center of the wrapper. Wrap the mixture by folding the sides until the meat mixture is enclosed. Do this step until the mixture is consumed.
Pour the water in a steamer. Bring it to a boil.
Meanwhile, arrange the chicken siomai in the steamer. Make sure that you grease the steamer using a cooking spray or by rubbing with cooking oil. This will prevent the wrapper from sticking.
Steam the chicken siomai for 15 to 25 minutes. The time will depend on the size of the siomai.
Transfer to a serving plate. Serve with your favorite dipping sauce and chili.
Share and enjoy!