Small Hot Sour Soup

It sounds like you are looking to learn more about a type of soup that is small, hot, and sour, and is commonly found in restaurants in the USA. One possible soup that fits this description is called "Hot and Sour Soup."

Hot and Sour Soup is a popular soup in Chinese-American cuisine. It is typically made with chicken broth, vinegar, soy sauce, chili oil or white pepper for heat, and ingredients such as tofu, bamboo shoots, and mushrooms. Some variations may also include ingredients such as eggs, meat (such as pork or shrimp), and cornstarch to thicken the soup.

Hot and Sour Soup is known for its distinctive taste, which is a balance of hot (spicy) and sour flavors. The heat comes from the chili oil or white pepper, while the sourness comes from the vinegar. The soup is usually served hot and can be garnished with ingredients such as green onions, cilantro, or sesame oil.

If you are interested in trying Hot and Sour Soup, you can look for it on the menus of Chinese-American restaurants or order it from a take-out or delivery service. You can also try making it at home using a recipe. There are many recipes available online, some of which may be more authentically Chinese than others, so you may want to do some research to find a recipe that suits your tastes.