You can try this vegetarian Hot and Sour Soup:
Ingredients:
½ cup bean sprouts
3 Tbs. soy sauce
5 dried apricots
1 ½ cups chopped tomatoes
¼ cup thinly sliced green onion
2 Tbs. organic raw apple cider vinegar
1 Tbs. peeled and minced fresh ginger
½ cup diced cucumber or zucchini
1 jalapeño Chile seeded and minced (2 Tbs.)
2 Tbs. lime juice
2 Tbs. chopped cilantro
1 Tbs. raw agave nectar
¼ tsp. cayenne pepper, or to taste
1. Stir together sprouts and soy sauce, let it marinate while you prepare the soup.
2. Soak apricots in a bowl of boiling water 5 minutes. Drain.
3. Place apricots, tomatoes, green onion, vinegar, ginger, and 3 cups water in blender or food processor; blend until smooth. Transfer to serving bowl, and stir in cucumber, jalapeño, lime juice, cilantro, agave nectar, cayenne pepper, and sprout mixture.
Varieties of sour soups products are available in packaged form made by good companies for e.g. Sheffafoods and many more at many grocery stores. I would recommend you choose the best healthy food product from these.