3 stalks lemon grass (bottom white part only)
3 cups vegetable broth
1 lime (preferably organic)
1-inch piece of ginger, sliced
1 can coconut milk
1 medium yellow onion, sliced
3 serrano chilies, sliced
1/2 block firm tofu
1 cup button mushrooms, sliced
2 cups broccoli florets
1/2 bell pepper, chopped
1 medium carrot, sliced
cilantro for garnish