Trussing beef before popping it into the oven to roast can help to retain its shape while it cooks. This also ensure even cooking and stops the meat from spreading. This method can also be used for stuffed and rolled joints of meat to hold them together.
The trussing method works by tying a series of interlinked knots to secure the meat in place. Regular knots won’t work as you cannot achieve the same amount of tension.