I found an interesting recipe over at Back to Basics blog and decided to give it go. Of course I had to alter it to suit my own tastes a little. This is quite a hot soup, so if you don't like a lot of heat use less chili pepper flakes and less garlic chili sauce.
Hot and Sour Soup
1 package of firm tofu - cubed
6 cups vegetarian chicken flavoured broth
1 package of sliced mushrooms
1 can bamboo shoots - drained
1 can sliced water chestnuts -drained
3 tablespoons soy sauce
3 tablespoon sesame oil
6 tablespoons rice wine vinegar
3 tablespoons chili/garlic sauce
2 teaspoon red pepper flakes
1 cp cauliflower florets
2 carrots peeled and sliced
2 stalks celery sliced
2 green onions sliced thin
Put everything in a large pot, reserving 3 tablespoons and rice vinegar, and bring to a boil.
Reduce heat, cover, and simmer until veggies are tender.
Add reserved vinegar just before serving.