Knit along to the stitch where you’d like the popcorn bundle to appear.
Without taking the stitch off the left hand needle, knit it, bring the yarn to the front and purl into the same stitch. Take the yarn around the back of the work and knit again, and bring the yarn around the front and purl into the stitch again. Then take the yarn around to the back of the work, and continue to knit the row.
You can add popcorn stitches wherever you want to add texture – in a scarf, or hat – or around the yoke of a sweater.
Or these sweet little Baby Popcorn bootees.