½ cup butter, softened
2 tablespoons minced basil
1 teaspoon minced garlic
Pinch of salt
Generous sprinkling of freshly ground black pepper
1 pound shrimp, size U15 (also known as jumbo), in their shells, deveined
Juice of ½ lemon (you don’t have to juice it ahead – just squeeze it on the dish)
Lemon wedges for serving