What restaurants are there in Beijing that "you must go once, even if you eat"?

There are many delicious restaurants worth visiting in Beijing. Here are some of my suggestions:

1. Cheap and authentic old Beijing Zhajiang Noodles-Sweet Water Garden Zhajiang Noodles Branch

2. Centennial crab roe bag-cheap square crab roe bag shop

3. Reproduce the production process of ancient roast duck-Quanjude Roast Duck Restaurant.

4. Guzaowei Beijing Luzhu Huoshao-Tingying Hutong Luzhu Huoshao Shop

5. Old Beijing special wonton soup-Fu Gui Mountain Villa wonton soup shop

6. Vegetarian delicious tea restaurant-Fangcaodi vegetarian restaurant

7. Traditional Handmade Grilled Fish-Xiaodong Grilled Fish Shop

8. Time-honored classic Beijing snacks-Tea Restaurant, Ding Dingxuan and Laoshe Teahouse

9. Beijing Pancakes Made Now-Old Liulichang Pancake Shop

10. Imperial Palace Cuisine Cooked by Ancient Craft-Cheap Square Imperial Restaurant

Beijing's food is rich and varied. These are all delicious and the taste is worth a try.