Hot and sour soup

United States

Soup preparation may use chicken or pork broth, or may be meat-free. Common key ingredients in the American Chinese version include bamboo shoots, toasted sesame oil, wood ear, cloud ear fungus, day lily buds, vinegar, egg, corn starch, and white pepper. Other ingredients include button mushrooms and small slices of tofu skin. It is comparatively thicker than the Chinese cuisine versions due to the addition of cornstarch. This soup is usually considered a healthy option at most Chinese establishments and, other than being high in sodium, is a very healthy soup overall.

China

"Hot and sour soup" is a Chinese soup claimed variously by the regional cuisines of Beijing and Sichuan as a regional dish. The Chinese hot and sour soup is usually meat-based, and often contains ingredients such as day lily buds, wood ear fungus, bamboo shoots, and tofu, in a broth that is sometimes flavored with pork blood. It is typically made hot (spicy) by red peppers or white pepper, and sour by vinegar.

India

In India, this soup is made with red and green chillies, ginger, carrots, snow peas, tofu, soy sauce, rice vinegar and a pinch of sugar. It is viewed in India as being a Chinese soup.

Vietnam

Canh chua (literally "sour soup"), a sour soup indigenous to the Mekong River region of southern Vietnam, is similar to the below Cambodian soup. It is typically made with fish from the Mekong River or shrimp, pineapple, tomatoes (and sometimes also other vegetables), and bean sprouts, and flavored with tamarind and the lemony-scented herb ngò ôm (Limnophila aromatica). When made in style of a hot pot, canh chua is called lẩu canh chua.

Cambodia

Samlor machu pkong or "Sour Shrimp Stew" is a Cambodian sour soup flavored with lemon, chilis, prawns and/or shrimp. One of the most popular sour soups in Cambodia, it is eaten most often on special occasions.

Samlar machu yuan or "Vietnam sour soup" is another common hot and sour soup of Cambodia originating among the Khmer Krom of the Mekong Delta region (hence, the name). It is made with fish, usually mudfish, walking catfish or tilapia, that has first been fried or broiled then added to the broth. Chicken may also be substituted. The ingredients which give the stew its characteristic flavor may vary depending on what is available locally to the cook. Possible ingredients include various combinations of pineapple, tomato, ngo gai, fried garlic, papaya, lotus root, Thai basil (Khmer: ជីក្រហម) and Thai chili.

Thailand

Tom yum is a Thai soup flavored with lemon grass, lime, kaffir lime leaves, galangal, fish sauce and chilis.

Sour curry (Thai: แกงส้ม, RTGS: Kaeng som) is a soup-like spicy and sour Thai curry.

Philippines

Sinigang is a Filipino soup or stew characterized by its sour and savoury taste most often associated with tamarind.