#### 1. Sauté Aromatics
- In a large stockpot, melt butter with olive oil over medium heat. Add chopped onion, celery, and garlic, and cook until softened, about 5 minutes.
#### 2. Make the Roux
- Sprinkle flour over the sautéed vegetables and stir well. Cook for 2 minutes to eliminate the raw flour taste.
#### 3. Add Liquids
- Gradually whisk in the seafood stock and wine, ensuring no lumps remain. Bring the mixture to a simmer.
#### 4. Add Seasonings
- Stir in Old Bay seasoning, smoked paprika, salt, and pepper. Simmer for 10 minutes, allowing the flavors to meld.
#### 5. Blend the Bisque
- Using an immersion blender, purée the soup until smooth. Alternatively, carefully transfer the mixture to a blender, blend in batches, and return to the pot. For an ultra-smooth texture, strain the bisque through a fine mesh sieve.
#### 6. Cook the Seafood
- Add the shrimp to the bisque and cook for 3–4 minutes until pink and opaque. Gently fold in the crab meat and simmer for 2 minutes to warm through.
#### 7. Finish and Serve
- Stir in the heavy cream and adjust seasoning as needed. Ladle the bisque into bowls, garnish with fresh parsley, and serve warm.