Shrimp and Grits with Louisiana BBQ Sauce

Name: Shrimp and Grits with Louisiana BBQ Sauce
Ingredients: 2 1/2 cups cream; 1/4 cup Worcestershire sauce; 2 to 3 tablespoons hot sauce; 2 teaspoons kosher salt; 1 1/2 cups grits, such as Logan Turnpike stone-ground grits; 1/4 cup onion powder; 2 teaspoons garlic powder; 1/4 teaspoon freshly ground black pepper; 1 stick butter; 8 ounces butter; 1 cup vegetable oil; 2 tablespoons smoked paprika; 1 tablespoon dried rosemary; 1 teaspoon dried oregano; 1 teaspoon kosher salt; 1/2 teaspoon ground black pepper; 1/2 teaspoon crushed chipotle pepper; 1 tablespoon lemon juice; 1 clove garlic, crushed; 1/2 stick butter; 1 cup freshly cut corn kernels; 1 tablespoon fresh rosemary needles, finely chopped; 1 tablespoon sugar, plus more if needed; Salt and freshly ground black pepper; 20 large (size 16-20) shrimp, peeled and deveined with tail on; 4 slices lemon, for garnish