Southern Shrimp and Grits
1 cup all-purpose flour 1 drop ketchup, or to taste 1 large green bell pepper, finely diced 1 medium sweet onion, diced 1 pound thick-cut bacon 1 pound uncooked medium shrimp - peeled, deve… 1 teaspoon Creole seasoning, or to taste 1 ½ cups stone-ground grits 2 dashes Worcestershire sauce, or to taste 4 cups milk 5 ½ cups water, divided salt and freshly ground black pepper to taste ½ (13 ounce) package kielbasa sausage, cut in… ½ cup butter