HOW WE CUT BEEF SIRLOIN TIP ROASTS Sirloin tip roasts are one of our favorite roasts for a good-ole fashioned Sunday beef roast. These roasts come from the round portion of a beef animal (the rear leg) and are a certified lean cut of beef. While sirloin tips aren’t fall apart tender like chuck roasts, they are full of rich beef flavor and are easy to slice for a roast beef dinner after they’re done cooking. We recommend seasoning the outside of these roasts with a rich seasoning like our Ultimat