We all know about the Front and Back Loops of our crochet stitches. Some people, however, don't realize there is actually a 3rd Loop as well. This 3rd Loop is known as the Horizontal Bar. Working in the Horizontal Bar (HB) is a great way to give a crocheted piece the appearance of having been knitted.
To locate the Third Loop, start by locating your Front and Back Loops.
Once you have located the Front and Back Loops, look for the loop on the backside of your work. There should be a loop running parallel to your Back Loop - that is your Horizontal Bar.