How can I achieve Jeny's surprisingly stretchy bind off ribbing for my knitting project?

To achieve Jeny's surprisingly stretchy bind off ribbing for your knitting project, follow these steps:

1. Use a larger needle size than what you used for the main body of your project.
2. Knit the first stitch, then yarn over, knit the next two stitches together.
3. Repeat step 2 until all stitches are bound off.
4. This technique creates a stretchy edge that is perfect for ribbing.