Grilled Lobster and Shrimp Tacos

Name: Grilled Lobster and Shrimp Tacos
Ingredients: 1 stick (8 tablespoons) unsalted butter, at room temperature; 2 canned chipotle peppers in adobo, seeded and minced, plus 2 tablespoons adobo sauce; 2 tablespoons lime juice plus 1 lime, cut into 8 wedges; Kosher salt and freshly ground black pepper; 1/2 cup sour cream; 8 ounces peeled and deveined large shrimp, tails removed; 1 tablespoon tequila; 1 tablespoon extra-virgin olive oil; 1 1/2 teaspoons minced fresh cilantro plus 1 cup cilantro leaves; 2 large chilled cooked lobster tails, split lengthwise; 8 corn tortillas (6 inch); 1 cup julienned radishes; 1 avocado, sliced; 1 Fresno chile, thinly sliced