Well, places like Jin Ding Xuan and Golden Lake serves more than decent Cantonese food I think.

I don't know the situation in Beijing. But in Guangdong, it's not safe to eat food cooked by others. Most peple add toxican substances in the food to make it look better. They don't care how the food affects others' health.

Even inviting a Canton cook to make meal for you is dangerious - most of them don't know what can eat and what cannot.

The surest safe way to eat Cantonese cuisine is - cooking by yourself!