It deserves a 5 star since the master chef was from a famous restaurant in China. His skill is probably the best in Phoenix.
The reason I took away one star was because:
1. Master chef was not cooking on that day, therefore his wife was making the meal. Her skill is not that good. I can give no more than 3 star to her.
2. May be the master chef can show his wife some cooking skills. It helps a lot when the master chef is not around.
That is why I took away one star.