Beijing snacks are a major feature of Beijing, but for some foreigners, they may feel uncomfortable or not very delicious. The following are some Beijing snacks that are difficult for foreigners to swallow:

1. Yangxiezi: Yangxiezi is a traditional snack with scorpions as the main raw material, which may be difficult for some foreigners to accept.

2. Ma Tofu: Ma Tofu is a kind of tofu made of raw materials such as soybeans and peanuts. It tastes spicy and may be more exciting for some foreigners.

3. oyster omelet: oyster omelet is a kind of pancake made of oyster omelet as the main raw material, which tastes greasy and may be heavy for some foreigners.

4. Zhajiang Noodles: Zhajiang Noodles is a traditional snack with noodles and meat sauce as the main raw materials. It tastes a little greasy and may not be suitable for some foreigners.

5. Chinese hamburger: Chinese hamburger is a traditional snack with Chinese hamburger cake and meat stuffing as the main raw materials, which may be a bit heavy for some foreigners.

Of course, many foreigners like the above snacks, and their tastes vary from person to person. You can try them if you have the chance.