With smooth, contrasting waste yarn and crochet hook, make a
loose chain of about four stitches more than you need to cast on. Cut yarn and
pull tail through last chain to secure. With needle, working yarn, and
beginning two stitches from last chain worked, pick up and knit one stitch
through the back loop of each chain (Figure 1) for desired number of stitches.
Work the piece as desired, and when you’re ready to use the cast-on stitches,
pull out the crochet chain to expose the live stitches (Figure 2).