The double foundation chain (also called the "double base chain" or "Japanese Foundation Row") is anotehr way to begin a crochet project. One of the great benefits of the double foundation chain is that is gives your crocheted piece greater elasticity than a straight chain. Because of that elasticity this is a great way to start a hat that is being worked from the brim up or for a sleeve.
Once you get the hang of it, you'll be able to quickly decide if you'd like to use a chain or a double foundation chain in your project. You'll also know how to do it when you encounter a pattern that asks for this type of foundation row.
I'd love to hear your feedback. Do you have a stitch you're currently struggling with or would like to learn? Let me know, maybe I can get a video done to help. This year there'll be advanced stitches, complete projects and more coming from my YouTube Channel so make sure to subscribe to get the very latest on what's happening!