There are many authentic local snacks in Beijing, and I recommend several famous places:

1. Donglaishun Gulou Store: This is one of the most famous roast duck restaurants in Beijing, and the roast duck is crispy and soft, which is very popular among Beijingers. Besides roast duck, there are other Beijing-style snacks, which are worth trying.

2. old Beijing niujie fried dumplings restaurant: this fried dumplings and beef soup restaurant is famous for its traditional fried dumplings and beef soup. The fried dumplings are crispy outside and tender inside, and the soup base is rich, which is very popular among diners.

3. The bean juice at zero o'clock in Dong 'an Market: Dong 'an Market is open all night, and the bean juice at zero o'clock is very popular among night owls. The bean juice is fragrant, which is a good product to relieve boredom. You must try it.

4. Quanjude Store in Kongjia Courtyard: This store is famous for its stewed rice, stewed beans and Quanjude's most distinctive roast duck. The environment is quaint and the taste is authentic, which is favored by locals and foreign tourists.

5. Zhajiang Noodles, Taoyuan Hutong: This time-honored Zhajiang Noodles has a history of more than 1 years, and it still adheres to handmade and traditional recipes. The sauce is rich and mellow, and the noodles are hard and strong. It is an authentic food in old Beijing and worth tasting carefully.

In addition, Wang Jiasha Hezi bean juice, Quanjude roast duck and Zhajiang Noodles in Dongyue market are also good places to taste authentic Beijing snacks. There are many kinds of snacks in Beijing. I hope the above recommendations will make you feast your eyes and experience Beijing's food culture. If you need more recommendations, please ask again.