Step 1

Heat the oil in a large stock pot over medium heat. Add the onion and cook until fragrant, then stir in the garlic, ginger, lemongrass, and curry paste and cook for one minute.

Step 2

Pour the broth into the pot while stirring continually, then stir in the fish sauce and simmer for 10 minutes. Pour in the coconut milk and stir, then add the mushrooms. Cook and stir until the mushrooms are soft, about 5 minutes.

Step 3

Add the shrimp and cook until no longer translucent, about 5 minutes. Stir in the lime zest and juice and season with salt to taste. Serve garnished with cilantro, sliced scallions and lime wedges.