How to Tie a Roast with Slip Knots
Learning how to tie a slip knot is not essential to tying a roast, but it is a more professional way of tying a roast than your standard knot. And, if you're into knitting/crocheting or fishing, you may already know how to do one.
The best way to practice your slip knot technique is to use rolling pin, or something similar. Once you get the hang of it, then move onto your roast.