Follow these simple steps to create a delectable Crab and Shrimp Seafood Bisque:

1. Sauté Vegetables: In a large pot, heat the olive oil and butter over medium heat. Add the chopped onion, celery, and carrot. Sauté until they become soft, about 5-7 minutes.

2. Add Garlic: Stir in the minced garlic and cook for an additional 1-2 minutes until fragrant.

3. Incorporate Tomato Paste: Add the tomato paste, stirring until combined, and cook for another minute.

4. Add Stock and Seasoning: Pour in the seafood stock. Add the Old Bay seasoning, salt, pepper, and bay leaf. Stir well to combine all ingredients.

5. Bring to a Simmer: Allow the mixture to come to a gentle simmer. Continue cooking for about 10 minutes to let the flavors meld.

6. Incorporate Shrimp: Add the shrimp to the pot and cook for approximately 5 minutes or until they turn pink and opaque.

7. Add Crab: Gently fold in the crab meat, being careful not to break it up too much.

8. Stir in Cream: Pour in the heavy cream and stir until fully combined. Continue to cook on low for another 5 minutes to allow the bisque to thicken slightly.

9. Remove Bay Leaf: Take out the bay leaf and discard it.

10. Garnish and Serve: Stir in the freshly chopped parsley and adjust seasoning if needed. Serve immediately in bowls, with lemon wedges on the side for an extra zest.