This video knitting tutorial will help you learn how to knit the moss stitch increase. This technique is similar to the knit front and back increase (KFB), but rather than knitting a second time, you purl. The resulting effect is useful when increasing in patterns that have both knit and purl stitches next to each other, such as the moss stitch, seed stitch, or ribbing.
Step 1: With the yarn in front, knit the first stitch on your main needle.
Step 2: Before taking the stitch off the main needle, insert the tip of your working needle into the backside of the loop and purl it through the back loop. Then pull the stitch off the needle.