Portuguese Shrimp Turnovers ~ Rissóis de Camarão

Name: Portuguese Shrimp Turnovers ~ Rissóis de Camarão
Prep time: 2 h
Total time: 2 h
Cuisine: Portuguese
Ingredients: 2 cups milk; 4 tablespoons (2 oz) unsalted butter; 1 teaspoon salt; 2 cups all-purpose flour, plus more for the work surface; 2 tablespoons (1 oz) unsalted butter; 1/4 cup finely chopped onion; 1 cup milk; 1/2 tablespoon finely chopped cilantro or parsley; 1 to 2 teaspoons store-bought or homemade hot-pepper sauce, or more to taste; 1/2 teaspoon coarse salt, or more to taste; 1/2 teaspoon freshly ground white pepper; 1/4 teaspoon freshly grated nutmeg; 2 tablespoons cornstarch or flour; 2 tablespoons water; 1/2 pound shrimp, peeled, deveined, cooked, well drained, and coarsely chopped (about 1 1/2 cups); 3 large eggs, beaten with 1/4 cup water for egg wash; Fine plain bread crumbs; Olive oil or other mild oil, for frying