Grilled Surf-and-Turf with Spicy Garlic-Shallot Butter

INGREDIENTS

• 1 teaspoon cayenne pepper
• 4 large garlic cloves, halved
• 6 8- to 10-ounce New York strip steaks (each about 3/4 inch thick)
• 3 10-ounce uncooked lobster tails, thawed if frozen, cut lengthwise in half
• 1 teaspoon salt
• 1/2 teaspoon ground black pepper
• 1/4 cup olive oil
• 2 large shallots, quartered
• 1/2 cup (1 stick) butter, room temperature