The Cable Cast On is a knitting technique used to create a flexible and sturdy edge. It involves using a knitting needle to form a series of stitches that resemble a twisted cable. This method is particularly useful for projects that require a neat and decorative edge, such as scarves or sweaters. To perform the Cable Cast On, you start with a slipknot on one needle, then use the other needle to create new stitches by inserting it into the slipknot and pulling the yarn through. This technique allows for easy adjustment of stitch count and provides a strong foundation for your knitting project.