Rehydrate the mushrooms (if desired) in a cup of water, then let stand 10 minutes. Sautee onion and finely diced sweet potatoes. Add bouillon and bring the pot to a boil. Add the noodles and seaweed. When cooked, add the miso, tofu, a splash of soy sauce, and the mushrooms. Ready to serve when tofu is warm. Serve with wonton strips to top each bowl.