A beef tip roast, also called a sirloin tip roast or round tip roast, is a lean cut of beef taken from the hindquarters of the cow, near the sirloin, which is considered a tougher cut due to its high muscle content and should be cooked slowly through braising or stewing to achieve tenderness; it's often used for making beef kebabs or thinly sliced for sandwiches when cooked low and slow.