In a large soup pot, saute the onions in a bit of the reserved mushroom liquid on low heat for about 5 minutes, until soft. Add garlic and chiles and saute for another minute, stirring to prevent sticking. Stir in the stock, mushrooms, pineapple and tomatoes and bring to a boil. Reduce heat and simmer for 5 minutes. Add the basil, mint or cilantro, lime juice, soy sauce and tofu. Simmer for 5 - 10 minutes until the flavors are well blended. Sprinkle with sprouts and basil leaves and accompany each serving with a wedge of lime. Posted to fatfree digest by "Jan Gordon" <jan@gordon.com> on Apr 19, 1999,