01 - Melt butter with olive oil in a large saucepan over medium heat. Add chopped onion, celery, carrot, and garlic. Sauté until vegetables are soft and fragrant, approximately 4–5 minutes.
02 - Stir in tomato paste, cayenne pepper, paprika, and bay leaf. Continue cooking for 2 minutes to develop flavors.
03 - Pour in white wine and simmer for 2 minutes, scraping up any browned bits from the bottom of the pan.
04 - Add seafood or fish stock and bring to a gentle boil. Reduce heat and simmer uncovered for 15 minutes to allow flavors to meld.
05 - Add shrimp and scallops to the simmering broth. Cook until just opaque, 3–4 minutes. Remove shrimp and scallops, chop coarsely, and set aside.
06 - Use an immersion blender to puree the soup until completely smooth. Alternatively, process in batches using a standard blender.
07 - Return soup to the pot. Stir in heavy cream, lemon juice, and reserved seafood including shrimp, scallops, and crab meat. Simmer for 5 minutes. Season with salt and pepper to taste.
08 - Ladle hot bisque into bowls and garnish with fresh chives or parsley.