Beef Brisket Picadillo Stuffed Empanadas

Name: Beef Brisket Picadillo-Stuffed Empanadas
Ingredients: 4 cups flour; 6 tbsp. unsalted butter, cubed; 1 1⁄2 tsp. kosher salt, plus more to taste; 1⁄2 cup olive oil; 1 lb. beef brisket; 5 cloves smashed; 2 medium carrots, halved crosswise; 2 large white onions, 1 quartered and 1 minced; 3 tbsp. chile powder; 1 1⁄2 tbsp. finely chopped oregano leaves; 2 tsp. ground cumin; 1 cup raisins; 1⁄2 cup sliced pitted canned black olives; 1⁄2 cup dry sherry; 1⁄4 cup sugar; 1⁄4 cup pine nuts; Freshly ground black pepper, to taste; Canola oil, for frying