Spicy Coconut Soup with Shrimp and Lobster

Ingredients

• 2 (4-inch) pieces lemongrass stalk, smashed
• 1 teaspoon whole coriander seeds
• 2 teaspoons olive oil
• 1/2 cup diced yellow onion
• 1/2 red bell pepper, seeds and stem removed, and diced
• 2 teaspoons minced garlic
• 2 teaspoons minced fresh ginger
• 2 cups shrimp stock
• 1/2 Scotch bonnet pepper, seeded and minced
• 1 1/4 teaspoons kosher salt
• 1/4 teaspoon freshly ground black pepper
• 12 ounces medium shrimp, peeled and deveined
• 2 spiny lobster tails, meat removed and diced
• 2 1/2 cups unsweetened coconut milk
• 1/4 cup fresh lime juice
• 3 to 4 tablespoons chopped fresh cilantro leaves
• Fresh cilantro sprigs, for garnish