We found Ah Sin by accident when our group went to visit the Hong Kong Museum - which is about 2 blocks away.
They have a pretty extensive menu and as one reviewer noted many dishes contain Quorn. I know that Quorn products in the U.S. contains egg whites and on that basis, we avoided these items.
There were still plenty of dishes without Quorn and we enjoyed our selections of Fried Rice Noodle, Vegetable Fried Rice, Eggplant and Tofu, and a mixed Chinese Greens dish. They do add egg to their Fried Rice dishes so I asked that they omit this.
I can speak some Cantonese and this was helpful as I don't believe there is much English spoken as this restaurant. As the menu is in Chinese and English, you should be able to point to your selections and get dishes that will meet your specific needs.
At the end of the meal, they presented some dim sum items from the downstairs takeout shop for our dessert treat. This was a nice touch.
Napkins are often not found at Chinese restaurants so be sure to carry some of your own. They don't serve ice water but you can order bottled water. Green tea was served.
Service was good and the food came out promptly.Pros: Large Menu, Good Value, Decent Food
Cons: Ambiance Lacking, Ice Water Not Available , Meat Analogs Are Made From Quorn