Spicy Crab Bisque

Name: Spicy Crab Bisque
Ingredients: 4 tablespoons unsalted butter; 1 white onion (small finely chopped); 6 celery ribs (finely chopped); 6 scallions (thinly sliced); 2 bay leaves; ¼ cup all-purpose flour; 5 cups low-sodium chicken broth; 2 tablespoons mashed roasted garlic; 3 cups whole milk; 2 tablespoons dry sherry; 1 tablespoon ketchup; 1 teaspoon tomato paste; ¼ teaspoon sweet smoked paprika; ⅛ teaspoon cayenne pepper; 1 pinch of ground cloves; 1 pinch of ground mace; 1 pinch of freshly grated nutmeg; 1 cup heavy cream; ½ tablespoon Tabasco (to 1 ); Salt; Freshly ground pepper; 2 pounds lump crab or Dungeness crabmeat (jumbo); Oyster crackers (for serving)