Instructions:

1. Sauté Vegetables:
   Heat olive oil in a large pot over medium heat. Add onion, celery, and carrot. Sauté until softened, about 5 minutes. Stir in garlic and cook for an additional minute.
2. Add Flavor Base:
   Stir in tomato paste, paprika, cayenne (if using), salt, and black pepper. Cook for 2 minutes, stirring constantly.
3. Incorporate Flour:
   Sprinkle flour over the mixture and stir until well combined. Cook for another minute to remove the raw flour taste.
4. Add Broth:
   Gradually pour in the seafood or chicken broth, stirring continuously to prevent lumps. Simmer on low heat for 10 minutes, stirring occasionally.
5. Puree the Soup:
   Use an immersion blender to puree the soup until smooth. Alternatively, transfer the soup to a standard blender in batches and blend until smooth, then return it to the pot.
6. Add Cream:
   Stir in the heavy cream and simmer for 10 more minutes, allowing the soup to thicken slightly.
7. Incorporate Seafood:
   Add the crab meat, shrimp, and sherry (if using). Simmer for 5 minutes or until the seafood is heated through. Be careful not to boil, as high heat can curdle the cream.
8. Adjust Seasoning:
   Taste and adjust seasoning with salt and black pepper as needed.
9. Serve:
   Ladle the bisque into bowls, garnish with fresh herbs, and serve hot. Pair with a crusty baguette or a side salad for a complete meal.

This bisque is a showstopper, perfect for impressing guests or treating yourself to a luxurious meal. Enjoy the rich, creamy flavors of the sea!