1 1/3 cups instant grits (four 1-ounce packets)
1 cup shredded Cheddar
6 tablespoons unsalted butter
Freshly ground black pepper
3/4 pound large peeled and deveined shrimp, tails removed
Kosher salt
1 1/2 cups crusty bread, crust removed, bread torn into 1/2-inch pieces
2 large scallions, sliced
1 link andouille sausage, sliced into half-moons (3 ounces)
1 stalk celery, diced
1/2 red bell pepper, diced
2 cloves garlic, minced
1 tablespoon all-purpose flour
1/2 cup low-sodium chicken broth
1 teaspoon Worcestershire sauce
1/2 teaspoon hot sauce, plus more for serving
Juice of 1/2 lemon
Be sure to use instant grits, which take 1 minute to cook (and commonly come in individual 1-ounce packets), not quick-cooking grits, which take 5 minutes.