It is a way of calling elongated chicharrones in Spain. Strips of fried and crunchy bacon elongated. They are very typical in Soria. In Colombia we tell them trains or chicharrón of several cars.
TORREZNO piece of bacon that is fried and cooked very toasted. The word comes from the Indo-European root ters, which means to dry, and is also related to the Latin word terra, land or dry land.