Pork Sirloin Double Roast This page first published: Jul 24, 2006 · Updated: Jun 12, 2018 · by CooksInfo. Copyright © 2021 · This post may contain affiliate links · This blog generates income via ads · Pork Sirloin Double Roast © Denzil Green A Pork Sirloin Double Roast is two sirloin pieces of pork tied together, front to back, in a cylindrical shape. The tenderloin portion that is usually attached to a pork sirloin roast is removed. It is usually sold boneless.