Brazilian Empanadas

Name: Brazilian Empanadas
Ingredients: 3 cups flour; 1 teaspoon salt; 1⁄2 teaspoon turmeric; 10 tablespoons unsalted butter; 6 tablespoons shortening; 1 egg; 1⁄2 cup beer; 1 small onion, cut into 1/2-inch dice; 2 plum tomatoes, cut into 1/2-inch dice; 1 (14 ounce) can hearts of palm, drained and palms cut into 1/2-inch dice; 2 tablespoons butter; 1⁄2 cup sherry wine; 1 tablespoon tomato paste; 1⁄2 lb shrimp, peeled, deveined, and cut into 1/2-inch dice; salt & freshly ground black pepper; 1 egg yolk; oil, for frying