How to yarn over

Yarning over, abbreviated yo, is one of the basic building blocks of most crochet stitches. To create different types of stitches, it may be used before or after the hook is inserted into the piece, or multiple times per stitch.

Step-by-step photos

How to yarn over
1. Position the hook in front of the yarn.
How to yarn over
2. Bring the yarn from the behind the hook to the front of the hook, over the top of the hook.