New Orleans BBQ Shrimp

Name: New Orleans BBQ Shrimp
Ingredients: 2 pounds large shrimp, peeled and deveined; 2 tablespoons Cajun seasoning; 2 tablespoons canola oil; 6 cloves garlic, smashed and peeled; One 12-ounce light-bodied beer; Juice of 1 lemon; One 8-ounce bottle clam juice; 1/4 cup hot sauce, preferably Tabasco; 1/4 cup Worcestershire sauce; 2 tablespoons apple-cider vinegar; 2 dried bay leaves; 1 teaspoon whole black peppercorns; 1/2 cup (1 stick) cold butter, cut into cubes; 1 crusty French baguette