Morcilla, also known as blood sausage, is a Spanish delicacy made from pork blood, rice, and spices. It has a unique flavor and a rich, dark color. In Madrid, you can find different varieties of morcilla, including the traditional one and the one made with onions. Enjoy morcilla as part of a tapas platter or in dishes like fabada asturiana, a hearty bean stew. Visit the local markets near the Royal Palace to find high-quality morcilla.