Work a 5-double-crochet popcorn stitch so that it pops to the front of your design:
Work 5 double crochet (dc) stitches in the same stitch.
Drop the loop from your hook.
Insert your hook from front to back under the top 2 loops of the first double crochet of the group.
Grab the dropped loop with your hook and pull it through the stitch.